JC HBHD 2 Week 3 Chapter 17 Respiratory
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Questions and Answers

What is the function of the mucus blanket in the respiratory mucosa?

  • To regulate the temperature of inhaled air
  • To lubricate the trachea and bronchi, allowing for smooth air flow
  • To help the lungs expand during inhalation
  • To trap inspired irritants like dust and pollen (correct)
  • The respiratory mucosa is responsible for:

  • Filtering and warming inhaled air (correct)
  • Exchanging gases between the air and blood
  • Producing hormones that regulate breathing
  • Controlling the rate of heart beat
  • What is the function of the epiglottis during swallowing?

  • To regulate the flow of air into the lungs
  • To produce sound
  • To prevent food from entering the trachea (correct)
  • To trap dust particles in the air
  • What is the largest piece of cartilage in the larynx?

    <p>Thyroid cartilage (B)</p> Signup and view all the answers

    Which structure in the respiratory system is responsible for the exchange of gases?

    <p>Alveoli (B)</p> Signup and view all the answers

    What is the primary function of the bronchi and bronchioles?

    <p>Distributing air to the alveoli (C)</p> Signup and view all the answers

    Which of the following conditions is characterized by the presence of air in the pleural space?

    <p>Pneumothorax (D)</p> Signup and view all the answers

    The condition known as epiglottitis is caused by which organism?

    <p>Haemophilus influenzae type B (Hib) (C)</p> Signup and view all the answers

    Which of the following is a common symptom of laryngitis?

    <p>Shortness of breath (B)</p> Signup and view all the answers

    Which muscle(s) are primarily responsible for inspiration?

    <p>Diaphragm and external intercostals (C)</p> Signup and view all the answers

    What is the most common cause of death in premature infants?

    <p>Infant respiratory distress syndrome (IRDS) (D)</p> Signup and view all the answers

    What happens to the pressure inside the lungs during inspiration?

    <p>It decreases. (C)</p> Signup and view all the answers

    Quiet expiration is primarily a(n) ____ process.

    <p>passive (C)</p> Signup and view all the answers

    Which of the following disorders is characterized by difficulty breathing due to narrowing of the airways?

    <p>Asthma (C)</p> Signup and view all the answers

    What is the function of surfactant in the alveoli?

    <p>To reduce surface tension and prevent the alveoli from collapsing (C)</p> Signup and view all the answers

    Which of these is NOT a factor that influences the regulation of ventilation?

    <p>Baroreceptors (B)</p> Signup and view all the answers

    What is the term for labored or difficult breathing?

    <p>Dyspnea (A)</p> Signup and view all the answers

    Which of the following is NOT a condition related to the lower respiratory tract?

    <p>Rhinitis (A)</p> Signup and view all the answers

    Which of the following is TRUE about the right primary bronchus?

    <p>It is more vertical than the left bronchus. (B)</p> Signup and view all the answers

    What is the approximate volume of air exchanged during normal quiet breathing called?

    <p>Tidal volume (C)</p> Signup and view all the answers

    Which of the following condition can be treated with abdominal thrusts?

    <p>Tracheal obstruction (C)</p> Signup and view all the answers

    Which of the following is the largest volume of air that can be exhaled after a maximal inspiration?

    <p>Vital capacity (D)</p> Signup and view all the answers

    Which of the following structures is involved in speech production?

    <p>Larynx (D)</p> Signup and view all the answers

    What is the term for the air that remains in the lungs after a forceful exhalation?

    <p>Residual volume (B)</p> Signup and view all the answers

    What does the medulla oblongata primarily control in relation to respiration?

    <p>The rate and depth of breathing (A)</p> Signup and view all the answers

    Which organ is primarily responsible for the gas exchange in the respiratory system?

    <p>Lungs (A)</p> Signup and view all the answers

    Which of the following conditions is NOT a respiratory disorder?

    <p>Osteoporosis (A)</p> Signup and view all the answers

    What is the primary role of chemoreceptors in respiration?

    <p>They sense changes in oxygen, carbon dioxide, and blood acidity. (D)</p> Signup and view all the answers

    What is included in the upper respiratory tract?

    <p>Nasal Cavity (A)</p> Signup and view all the answers

    Which condition is commonly associated with the lower respiratory tract?

    <p>Asthma (B)</p> Signup and view all the answers

    During pulmonary gas exchange, where does oxygen move from and to?

    <p>From alveoli to lung capillaries (B)</p> Signup and view all the answers

    How is the majority of oxygen transported in the blood?

    <p>Bound to hemoglobin (D)</p> Signup and view all the answers

    What is the main function of the trachea in the respiratory system?

    <p>To transport air to the lungs (D)</p> Signup and view all the answers

    Which structure is NOT part of the upper respiratory tract?

    <p>Bronchi (C)</p> Signup and view all the answers

    What is the primary form in which carbon dioxide is transported in the blood?

    <p>As bicarbonate ions (C)</p> Signup and view all the answers

    Which of the following is NOT a characteristic of Cheyne-Stokes respiration?

    <p>Regular, rhythmic breathing (B)</p> Signup and view all the answers

    What is the difference between internal and external respiration?

    <p>External respiration refers to gas exchange within the lungs, while internal respiration refers to gas exchange between the blood and tissues. (C)</p> Signup and view all the answers

    Which of the following is the correct sequence of events during inspiration?

    <p>Diaphragm contracts, thoracic cavity volume increases, lung pressure decreases, air moves into the lungs. (C)</p> Signup and view all the answers

    Which combining form refers to the trachea?

    <p>trache/o (B)</p> Signup and view all the answers

    What combining form means 'lung, air'?

    <p>pneumon/o (C)</p> Signup and view all the answers

    Which combining form indicates 'mouth, mouthlike opening'?

    <p>stom/a (D)</p> Signup and view all the answers

    Which term refers to the 'diaphragm'?

    <p>diphragmat/o (D)</p> Signup and view all the answers

    What combining form stands for 'cartilage'?

    <p>chondr/o (A)</p> Signup and view all the answers

    What does the abbreviation "CF" stand for in the context of respiratory conditions?

    <p>Cystic Fibrosis (C)</p> Signup and view all the answers

    What does "PE" stand for in the context of respiratory conditions?

    <p>Pulmonary Embolism (A)</p> Signup and view all the answers

    Which condition is represented by the abbreviation "ARDS"?

    <p>Acute Respiratory Distress Syndrome (D)</p> Signup and view all the answers

    What is the correct abbreviation for the common respiratory condition known as "croup"?

    <p>CP (C)</p> Signup and view all the answers

    Which of the following abbreviations refers to a respiratory condition commonly associated with coal miners?

    <p>CWP (A)</p> Signup and view all the answers

    Which of the following structures is responsible for dividing the nasal passages into left and right sides?

    <p>Nasal septum (C)</p> Signup and view all the answers

    Which of the following structures is NOT a part of the upper respiratory tract?

    <p>Trachea (C)</p> Signup and view all the answers

    What is the function of the epiglottis?

    <p>It is a small flap of cartilage that keeps food from entering the respiratory tract (A)</p> Signup and view all the answers

    Which abbreviation is a common term used for a medical procedure involving inserting a plastic tube into the airway to help with breathing?

    <p>CPAP (D)</p> Signup and view all the answers

    What is the correct abbreviation for the term "Pulse Oximetry"?

    <p>POx (D)</p> Signup and view all the answers

    Which of the following is NOT a function of the cilia in the nasal cavity?

    <p>Creating sound when we talk (A)</p> Signup and view all the answers

    Which of the following structures is responsible for the exchange of gases between the air and the blood?

    <p>Alveoli (C)</p> Signup and view all the answers

    Which of the following structures is NOT a division of the lungs?

    <p>Pleurae (A)</p> Signup and view all the answers

    Which of the following is the primary function of the pleurae?

    <p>To prevent the lungs from collapsing (B)</p> Signup and view all the answers

    Which of the following is NOT involved in the process of inspiration (breathing in)?

    <p>Increased pressure within the lungs (C)</p> Signup and view all the answers

    Which condition is associated with an accumulation of fluid in the pleural space?

    <p>Pleural effusion (D)</p> Signup and view all the answers

    What is the primary purpose of a bronchoscopy?

    <p>To visualize the airways of the lungs (D)</p> Signup and view all the answers

    Which of the following is a common cause of epistaxis?

    <p>Dry air (C)</p> Signup and view all the answers

    What does pneumoconiosis refer to?

    <p>Lung disease caused by inhaling dust, chemicals, or toxins (D)</p> Signup and view all the answers

    What do arterial blood gases (ABGs) measure?

    <p>Blood levels of oxygen, carbon dioxide, and pH balance (A)</p> Signup and view all the answers

    Which respiratory condition is characterized by wheezing due to airway constriction?

    <p>Asthma (A)</p> Signup and view all the answers

    What is a primary symptom of hypercapnia?

    <p>Increased carbon dioxide levels in the blood (B)</p> Signup and view all the answers

    Which of these conditions is characterized by difficulty in breathing when lying flat?

    <p>Orthopnea (A)</p> Signup and view all the answers

    What is the primary purpose of the Mantoux test?

    <p>To identify exposure to tuberculosis (A)</p> Signup and view all the answers

    What type of device is a metered dose inhaler (MDI)?

    <p>A handheld device for delivering medication (D)</p> Signup and view all the answers

    What does pleurodesis aim to achieve?

    <p>To fuse the pleural linings together (D)</p> Signup and view all the answers

    Which procedure involves the use of a device to produce a fine mist for deep airways?

    <p>Nebulizer (C)</p> Signup and view all the answers

    What is the main function of the test that involves the measurement of O2 and CO2 levels in arterial blood?

    <p>To evaluate respiratory efficiency (A)</p> Signup and view all the answers

    What is the primary delivery method of medication when using a nebulizer?

    <p>Inhalation of a mist (B)</p> Signup and view all the answers

    Which procedure involves a visual examination of the airways?

    <p>Bronchoscopy (A)</p> Signup and view all the answers

    How does pleurodesis accomplish pleural fusion?

    <p>By infusing an irritating substance (C)</p> Signup and view all the answers

    What is the purpose of postural drainage in respiratory care?

    <p>To facilitate drainage of secretions from the lungs (B)</p> Signup and view all the answers

    What does pulmonary angiography examine?

    <p>Pulmonary circulation after dye injection (D)</p> Signup and view all the answers

    What type of test is commonly referred to as spirometry?

    <p>Pulmonary function tests (D)</p> Signup and view all the answers

    Which procedure involves measuring the saturation of peripheral oxygen?

    <p>Pulse oximetry (A)</p> Signup and view all the answers

    What is the purpose of a nebulizer?

    <p>To deliver medication via fine mist (D)</p> Signup and view all the answers

    What does sputum analysis involve?

    <p>Evaluation of mucus or fluid from the respiratory tract (A)</p> Signup and view all the answers

    What is the intended result of infusing a sterile irritating substance into the pleural space?

    <p>To create scar tissue and fuse pleural linings (B)</p> Signup and view all the answers

    In pulmonary function tests, what is primarily assessed?

    <p>Lung capacity and respiratory mechanics (C)</p> Signup and view all the answers

    Flashcards

    Major organs of the respiratory system

    Organs like the lungs, trachea, and bronchi that enable breathing.

    Upper respiratory tract

    Includes structures like the nose, pharynx, and larynx responsible for air conduction and filtering.

    Conditions of the upper respiratory tract

    Common ailments like colds, sinusitis, and allergies affecting the upper respiratory system.

    Lower respiratory tract

    Includes the trachea, bronchi, and lungs, responsible for gas exchange and oxygen delivery.

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    Conditions of the lower respiratory tract

    Includes conditions like pneumonia and bronchitis affecting the lungs and bronchi.

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    Respiratory System Structure

    Resembles an inverted tree; alveoli are like leaves.

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    Diffusion

    Process for gas exchange in the respiratory system.

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    Respiratory Mucosa

    Mucous membrane lining air distribution tubes.

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    Function of Mucus

    Traps irritants and purifies air in the respiratory system.

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    Functions of the Nose

    Warms, moistens air, and contains smell organs.

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    Pharynx

    Throat; connects nasal and oral cavities.

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    Functions of the Pharynx

    Air distribution and food passage; involved in immune response.

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    Larynx

    Voice box below the pharynx; contains vocal cords.

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    Structure of the Trachea

    Tube connecting larynx to bronchi; reinforced by cartilage.

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    Bronchi

    Branches of the trachea leading to lungs; facilitate air distribution.

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    Alveoli

    Tiny air sacs for gas exchange in the lungs.

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    Respiratory Distress Syndrome

    Inability to inflate alveoli; can be in infants or adults.

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    Pleura

    Membrane lining chest cavity, reducing friction during breathing.

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    Pulmonary ventilation

    Movement of air into and out of the lungs through inspiration and expiration.

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    Inspiration

    Active process of bringing air into the lungs by increasing thoracic volume.

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    Expiration

    Passive or active process of moving air out of the lungs by decreasing thoracic volume.

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    Tidal volume (TV)

    The amount of air normally breathed in or out with each breath.

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    Vital capacity (VC)

    The largest amount of air that can be forcibly exhaled after a full inspiration.

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    Inspiratory reserve volume (IRV)

    The amount of air that can be forcibly inhaled after a normal inhalation.

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    Expiratory reserve volume (ERV)

    The amount of air that can be forcibly exhaled after expiring tidal volume.

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    Residual volume (RV)

    Air that remains in the lungs after the most forceful expiration.

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    Regulation of ventilation

    Controls the body's breathing rate and depth based on oxygen and carbon dioxide levels.

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    Eupnea

    Normal, healthy breathing pattern.

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    Hyperventilation

    Rapid and deep respirations, often leading to reduced carbon dioxide levels.

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    Hypoventilation

    Slow and shallow respirations resulting in increased carbon dioxide levels.

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    Cheyne-Stokes respiration

    A pattern of alternating periods of apnea and hyperventilation, often seen in critical conditions.

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    Oxyhemoglobin

    Hemoglobin combined with oxygen, responsible for transporting oxygen in blood.

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    Carbaminohemoglobin

    Formed when hemoglobin binds with carbon dioxide, facilitating its transport in blood.

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    Mantoux test

    Intradermal injection of PPD to check for tuberculosis exposure.

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    Metered dose inhaler (MDI)

    Handheld device that delivers medication to the lower airways.

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    Nebulizer

    Device that produces a fine mist to deliver medication to deep airways.

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    Pleurodesis

    Infusion of an irritant into the pleural space to fuse pleural linings.

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    Oxygen and carbon dioxide levels

    Measurement of O2 and CO2 levels and acid-base balance in arterial blood.

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    Radiological picture of lungs

    Imaging technique used to visualize the lungs.

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    Visual examination of airways

    Procedure used to examine the air passages of the lungs.

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    Intradermal injection

    Injection delivered just beneath the skin surface.

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    Empyema

    Accumulation of pus in the pleural cavity.

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    Hemothorax

    Blood accumulation in the pleural cavity.

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    Pneumothorax

    Presence of air in the pleural cavity.

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    Pleural Effusion

    Excess fluid between the pleura layers.

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    Pneumonia

    Infection inflaming air sacs in the lungs.

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    Pulmonary Embolism

    Blockage in a pulmonary artery usually due to blood clots.

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    Bronchoscopy

    Visual examination of the airways through a bronchoscope.

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    Chest X-ray

    Radiological image used to visualize lung structures.

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    Acute Bronchitis

    Infection causing inflammation of the bronchial tubes.

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    Acute Respiratory Distress Syndrome (ARDS)

    Severe lung condition causing respiratory failure.

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    Chronic Obstructive Pulmonary Disease (COPD)

    Progressive lung disease causing breathing difficulties.

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    Cystic Fibrosis (CF)

    Genetic disorder affecting lung function and mucus production.

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    Pulmonary Resuscitation (CPR)

    Emergency procedure to restore breathing and heartbeat.

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    Oxygen Therapy (O2)

    Supplemental oxygen to increase blood oxygen levels.

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    Allergic Rhinitis

    Inflammation of nasal passages due to allergens.

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    Atelectasis

    Collapse of part or all of a lung.

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    Postural Drainage

    A technique to assist drainage of lung secretions by positioning the patient in various ways.

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    Pulmonary Angiography

    A radiographic exam of pulmonary circulation after a contrast dye injection.

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    Pulmonary Function Tests (PFTs)

    Tests measuring lung capacity and performance, often referred to as spirometry.

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    Pulse Oximetry

    Indirect measurement of peripheral oxygen saturation (SpO2) in the body.

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    Sputum Analysis

    The examination of mucus or fluid coughed up from the respiratory tract.

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    Chest Physiotherapy (CPT)

    A group of treatments for airway clearance and lung drainage.

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    Spirometry

    A specific test within pulmonary function tests that measures airflow and lung volume.

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    Contrast Dye

    A substance injected during imaging tests to improve visibility of structures.

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    trache/o

    Combining form meaning trachea, the windpipe.

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    stomat/o

    Combining form meaning mouth or mouthlike opening.

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    Nares

    External openings of the nasal cavity, commonly known as nostrils.

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    Nasal septum

    The wall that divides the nasal cavity into left and right sides.

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    Hard palate

    The bony structure that separates the nasal cavity from the mouth.

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    Sinus cavities

    Air-filled spaces within the skull, including maxillary, frontal, ethmoidal, and sphenoidal.

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    Cilia

    Tiny hair-like structures in the nasal cavity that filter and move mucus.

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    Epiglottis

    A flap of cartilage that closes over the trachea during swallowing to prevent food entry.

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    Study Notes

    Respiratory System

    • The respiratory system is covered in chapter 17.
    • Learning objectives for lesson 17.1 include listing and describing the function of respiratory system organs, discussing the structures and conditions of the upper respiratory tract, and discussing the structures and conditions of the lower respiratory tract.
    • The basic plan of the respiratory system is similar to an inverted tree.
    • Gas exchange occurs through diffusion.
    • The upper respiratory tract includes the nose, pharynx, and larynx.
    • The lower respiratory tract includes the trachea, bronchial tree, and lungs.
    • Respiratory mucosa lines the air distribution tubes and produces a mucus blanket.
    • The cilia on mucosal cells move mucus upward to the pharynx.

    Nose

    • The nasal septum divides the nose into two cavities.
    • The mucous membrane lines the nose.
    • Nasal polyps are noncancerous growths.
    • Frontal, maxillary, sphenoidal, and ethmoidal sinuses drain into the nose.
    • The nose warms and moistens inhaled air.
    • Functions of the nose: Warms and moistens inhaled air; contains sense organs of smell.

    Pharynx

    • The pharynx (throat) is approximately 12.5 cm (5 inches) long and divided into nasopharynx, oropharynx, and laryngopharynx.
    • The pharynx has openings for nasal cavities, mouth, esophagus, larynx, and auditory tubes.
    • Pharyngeal tonsils and openings to the auditory tubes are in the nasopharynx.
    • Other tonsils are in the oropharynx.
    • The pharynx is lined by mucous membrane.

    Larynx

    • The larynx (voice box) is located below the pharynx.
    • It has several pieces of cartilage including the thyroid cartilage (Adam's apple).
    • The epiglottis partially covers the opening into the larynx.
    • The larynx contains a mucous lining and vocal cords.
    • The space between the cords is called the glottis.
    • Functions of the larynx: Air distribution and voice production.

    Laryngeal Cancer

    • The incidence increases with age and alcohol abuse.
    • Mostly affects men over age 50.
    • Removal of the larynx may require esophageal speech or an artificial larynx.

    Upper Respiratory Infections (URIs)

    • Rhinitis: Nasal inflammation (cold, influenza, or allergies).
    • Pharyngitis: Inflammation or infection of the pharynx (sore throat)
    • Infectious rhinitis is also known as the common cold.
    • Allergic rhinitis is also known as hay fever.

    Laryngitis

    • Inflammation of the larynx due to infection or irritation.
    • Epiglottitis is a life-threatening condition, caused by Haemophilus influenzae type B (Hib) infection.
    • Croup causes a barking cough.

    Anatomical Conditions

    • Deviated septum: A septum that is abnormally far from a midsagittal plane (congenital or acquired).
    • Epistaxis (bloody nose): Due to mechanical injuries to the nose, hypertension, or other factors.

    Trachea

    • The trachea (windpipe) is about 11 cm (4.5 inches) long.
    • It extends from the larynx into the thoracic cavity.
    • C-shaped rings of cartilage hold the trachea open.
    • Function: Passageway for air to move to and from the lungs.
    • Obstruction can be life-threatening in minutes.
    • Common procedures to clear obstructions include abdominal thrusts and tracheostomies.

    Bronchi, Bronchioles, and Alveoli

    • The trachea branches into right and left bronchi, with the right bronchus being more vertical.
    • Aspirated objects often lodge in the right primary bronchus.
    • Each bronchus branches into smaller tubes (secondary bronchi), eventually leading to bronchioles.
    • Bronchioles end in clusters of microscopic alveolar sacs.
    • Alveolar walls are made up of alveoli, which are where gas exchange occurs between air and blood.

    Functions of Bronchi, Bronchioles, and Alveoli

    • Bronchi and bronchioles distribute air.
    • Alveoli exchange gases between blood and air.
    • Type II cells produce surfactant to help reduce surface tension in the alveoli.

    Gas Exchange Structures of the Lung

    • These structures include alveoli, surfactant, capillaries, and other components essential for gas exchange.
    • Alveolar walls provide a large surface area for diffusion.

    Respiratory Distress

    • Infant respiratory distress syndrome (IRDS) is a leading cause of death in premature infants. It's caused by a lack of surfactant production.
    • Adult respiratory distress syndrome (ARDS) is surfactant impairment caused by foreign substances or other factors.

    Structure of the Lungs

    • Lungs are large enough to fill the chest cavity, except for where the heart and large blood vessels are located.
    • The apex is the narrow upper portion of each lung.
    • The base is the broader lower part that rests on the diaphragm.

    Structure of the Pleura

    • The pleura is a moist, smooth, slippery membrane lining the chest cavity. It covers the lungs and chest wall, reducing friction during breathing.

    Functions of the Lungs and Pleura

    • Function: Pulmonary ventilation (breathing).
    • Pleurisy: Inflammation of the pleura.
    • Atelectasis: Incomplete expansion or collapse of the lung.
    • Pneumothorax: Presence of air in the pleural space.
    • Hemothorax: Presence of blood in the pleural space.

    Conditions of the Lower Respiratory Tract

    • Acute bronchitis.
    • Pneumonia.
    • Tuberculosis.
    • Restrictive pulmonary disorders.
    • Obstructive pulmonary disorders (e.g., COPD, chronic bronchitis, emphysema, asthma).
    • Lung cancer.

    Respiration and Gas Exchange

    • Pulmonary ventilation involves inspiration (breathing in) and expiration (breathing out).
    • Mechanically this occurs due to changes in pressure and volume of the thorax.
    • Mechanisms include the diaphragm and external and internal intercostals.
    • Regulation is done by the brainstem, including central regulatory centers.
    • Breathing rates are influenced by factors like the medullary rhythmicity area.

    Volumes of Air Exchanged in Pulmonary Ventilation

    • Tidal volume.
    • Inspiratory Reserve Volume.
    • Expiratory Reserve Volume.
    • Vital Capacity.
    • Residual Volume.
    • Total Lung Capacity.

    Regulation of Ventilation

    • Regulation permits body adaptation to varying oxygen and carbon dioxide needs.
    • Brainstem’s respiratory control centers respond to changes in chemical levels and other factors.
    • Medullary centers set the resting breathing rate.
    • Pontine centers adjust the breathing rhythm.
    • External factors, like the cerebral cortex, influence, but to a limited extent, respiratory control.

    Breathing Patterns

    • Eupnea (normal breathing).
    • Hyperventilation (rapid, deep breathing).
    • Hypoventilation (slow, shallow breathing).
    • Dyspnea (labored or difficult breathing).
    • Orthopnea (dyspnea relieved by upright posture).
    • Apnea (cessation of breathing).
    • Cheyne-Stokes Respiration (CSR).

    Pulmonary Gas Exchange

    • Carbaminohemoglobin: Carbon dioxide bonds to hemoglobin.
    • Carbon Dioxide Movement: Carbon dioxide leaves lung blood and enters the alveoli.
    • Oxygen Movement: Oxygen moves from alveoli into blood.
    • Oxyhemoglobin: Oxygen binds with hemoglobin.

    Blood Transportation of Gases

    • Oxygen transport: Most oxygen binds to hemoglobin to form oxyhemoglobin.
    • Carbon dioxide transport: Significant amounts transported as bicarbonate ions in blood. Some as carbaminohemoglobin. There are additional ways to transport gases in blood, including dissolved forms.

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    Test your knowledge on Chapter 17 of the respiratory system. Explore the functions of various organs, the upper and lower respiratory tract structures, and the mechanisms of gas exchange. This quiz will help reinforce your understanding of respiratory anatomy and physiology.

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