Respiratory System MCQs
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Questions and Answers

What is the primary function of the larynx in the respiratory system?

  • To produce sound (correct)
  • To humidify the air
  • To transport air to the lungs
  • To filter incoming air

Which of the following accurately describes the trachea?

  • It curves around the heart.
  • It connects the larynx to the lungs. (correct)
  • It is the primary site for gas exchange.
  • It is a short, cylindrical airway that ends in the bronchi.

What role do paranasal sinuses play in the respiratory system?

  • They house the alveoli for gas exchange.
  • They warm and moisten the air. (correct)
  • They protect the lungs from infections.
  • They aid in voice resonance.

Which structure is primarily involved in gas exchange in the respiratory system?

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

What is the main function of the conducting zone of the respiratory system?

<p>To filter, warm, and moisten the air (A)</p> Signup and view all the answers

Which structure is part of the upper respiratory system?

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

Which of the following is not included in the lower respiratory system?

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

What is the function of the conducting zone in the respiratory system?

<p>Conducting air to alveoli (B)</p> Signup and view all the answers

Which area is primarily responsible for gas exchange in the lungs?

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

Which part of the pharynx is located behind the nasal cavity?

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

What describes the pharynx?

<p>A common passage for both air and food (D)</p> Signup and view all the answers

Which of the following bones contains paired air spaces known as paranasal sinuses, located medial of the eye?

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

What divides the nasal cavity into left and right portions?

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

Which structure is classified as a respiratory muscle?

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

Which sequence does not accurately represent the structures of the respiratory system?

<p>Nose – pharynx - larynx - trachea - primary bronchi - secondary bronchi - tertiary bronchi - bronchioles - terminal bronchioles (A)</p> Signup and view all the answers

Which of the following options is not a function of the respiratory system?

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

Identify the process that is incorrectly listed as part of respiratory physiology.

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

What best defines Pulmonary Ventilation?

<p>Moving air into and out of the lungs (B)</p> Signup and view all the answers

What is the correct classification of the Upper Respiratory System?

<p>Nose, nasal cavity, pharynx (A)</p> Signup and view all the answers

Which part of the respiratory system includes the alveolar sacs?

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

Which statement correctly describes the function of the paranasal sinuses?

<p>Assist in voice resonance (C)</p> Signup and view all the answers

Which part is commonly referred to as Adam’s apple?

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

Which structure is a part of the larynx?

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

What accurately describes the trachea?

<p>Divides into two smaller tubes: right and left primary bronchi (A)</p> Signup and view all the answers

Which statement correctly describes the lung's structure?

<p>2 lungs: left and right located in thoracic cavity, has a conical shape (A)</p> Signup and view all the answers

Which of the following accurately describes bronchial circulation?

<p>Supplies oxygenated blood pumped from the left ventricle carried by bronchial arteries (D)</p> Signup and view all the answers

Which statement accurately defines pulmonary circulation?

<p>Supplies deoxygenated blood pumped from the right ventricle carried by pulmonary arteries (B)</p> Signup and view all the answers

Which statement provides a correct explanation about alveoli?

<p>Promote diffusion of gases between the alveolus and blood in pulmonary capillaries (B)</p> Signup and view all the answers

Which statement correctly describes the pleura?

<p>The outer surface of each lung and the adjacent internal thoracic wall are lined by a serous membrane called pleura (B)</p> Signup and view all the answers

Flashcards

What is the upper respiratory system?

The upper respiratory system is the part of the respiratory system that includes the nose, pharynx, and larynx.

What is the lower respiratory system?

The lower respiratory system is the part of the respiratory system that includes the trachea, bronchi, bronchioles, and alveoli.

What is the conducting zone?

The conducting zone of the respiratory system is the part of the system that conducts air from the nose and mouth to the alveoli.

What is the respiratory zone?

The respiratory zone of the respiratory system is the part of the system that is responsible for gas exchange.

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What is the nose?

The nose is the external portion of the respiratory system, responsible for filtering and warming the air.

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What are the paranasal sinuses?

The paranasal sinuses are air-filled spaces in the skull that connect to the nasal cavity, and they help with resonance during speaking.

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What is the pharynx?

The pharynx is a funnel-shaped tube that connects the nasal and oral cavities to the larynx. It's a common passageway for air and food.

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How is the pharynx divided?

The pharynx is divided into three parts - the nasopharynx, oropharynx, and laryngopharynx.

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Serous pleural fluid

A thin, lubricating fluid produced by the pleural membranes, allowing the lungs to move smoothly during breathing.

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Diaphragm

The primary muscle responsible for breathing, located beneath the lungs. It contracts to increase the volume of the chest cavity, allowing air to enter the lungs.

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Conducting zone

This part of the respiratory system is involved in the passage of air, not the exchange of gases.

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Respiratory zone

This part of the respiratory system is responsible for gas exchange between the air and the blood.

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Pulmonary ventilation

The process of moving air in and out of the lungs.

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External respiration

The exchange of gases between the alveoli and the blood in the pulmonary capillaries.

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Internal respiration

The exchange of gases between the blood of the systemic capillaries and the cells of the body.

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Deglutition

This refers to the process of swallowing.

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Hypopharynx

The uppermost portion of the pharynx, located above the laryngopharynx and oropharynx.

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What is the Adam's apple?

The thyroid cartilage forms the prominent protrusion in the front of the neck, known as the Adam's apple.

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What is a part of the larynx?

The larynx, also known as the voice box, is a complex structure made up of cartilages, including the vocal cords.

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What is the trachea?

The trachea is a tube that carries air to the lungs, formed by 16 to 20 C-shaped cartilaginous rings that maintain its open shape.

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What is the structure of the lungs?

The lungs are spongy, cone-shaped organs located within the thoracic cavity, responsible for the gas exchange process.

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What is bronchial circulation?

The bronchial circulation supplies oxygenated blood to the lungs, nourishing its tissues and providing oxygen to the bronchi.

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What is pulmonary circulation?

The pulmonary circulation supplies deoxygenated blood to the lungs for oxygenation. This blood returns to the heart after receiving oxygen.

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What are alveoli?

Alveoli are tiny air sacs in the lungs responsible for the exchange of oxygen and carbon dioxide between the blood and the air.

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Describe the trachea.

The trachea is a tube that extends through the mediastinum, lying anterior to the esophagus and inferior to the larynx. It carries air to and from the lungs.

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What is the function of the bronchi?

The bronchi are branched airways that originate from the left and right primary bronchi. They conduct air into the lungs.

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Where are the lungs located?

The lungs are cone-shaped organs located in the thoracic cavity. They are responsible for gas exchange.

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What is the epiglottis?

The epiglottis is a leaf-shaped piece of cartilage that is covered with epithelium. It folds over the opening of the larynx during swallowing to prevent food from entering the airway.

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Study Notes

Respiratory System MCQs

  • Upper Respiratory System: Nose, nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, and terminal bronchioles
  • Lower Respiratory System: Bronchi, bronchioles, terminal bronchioles, respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli
  • Conducting Zone: Larynx, trachea, bronchi, lungs
  • Respiratory Zone: Respiratory bronchioles, alveolar ducts, alveolar sacs and alveoli
  • Paranasal Sinuses: Frontal, Ethmoidal, Sphenoidal, Maxillary
  • Pharynx: Common passage for air and food
  • Larynx: Voice box, short cylindrical airway ending in trachea
  • Trachea: Conducts air into the lower respiratory tract
  • Bronchi: First part conducting air
  • Lungs: Paired thoracic cavity structures, conical shape, separated by mediastinum, right lung has 3 lobes, left lung has 2 lobes
  • Alveoli: Small saccular outpocketings, promote gas exchange between alveoli and blood in pulmonary capillaries
  • Epiglottis: Leaf-shaped piece of elastic cartilage, prevents food and liquids from entering trachea
  • Glottis: Triangular slit opening between vocal folds, preventing foreign objects from entering the trachea
  • Bronchial Circulation: Supplies oxygenated blood to the lungs
  • Pulmonary Circulation: Carries deoxygenated blood from the right ventricle to the lungs
  • Respiratory Muscles: Diaphragm, intercostal muscles
  • Conducting Zone Function: Filter, warm, and moisten incoming air
  • Respiratory Zone Function: Gas exchange, diffusion of gases between alveoli and blood,

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Description

Test your knowledge with this quiz focused on the respiratory system. It covers both the upper and lower respiratory systems, including important structures such as the larynx, trachea, and alveoli. Challenge yourself with multiple-choice questions that explore key concepts and functions of the respiratory tract.

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