Y1S1 011 III Physiology Respiratory

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What is the primary function of the respiratory system in terms of cellular respiration?

To provide O2 to cells for ATP hydrolysis (correct)

To generate ATP through hydrolysis

To facilitate the exchange of gases for cellular metabolism

To regulate energy needs in the body

What is the direction of CO2 transport in the respiratory system?

From the lungs to the tissues

From the nasal cavity to the sinuses

From the tissues to the lungs and then expired (correct)

From the trachea to the bronchial tree

What is the role of the physical barrier in the respiratory system?

To produce hormone-like substances

To separate the internal and external environments (correct)

To regulate oxygen debt

To facilitate gas exchange between the internal and external environments

What is the function of the Upper Respiratory Tract?

To filter incoming air and transport it to the alveoli (B) Signup and view all the answers

What drives the rate of respiration?

Oxygen debt (A) Signup and view all the answers

What is the principal role of the respiratory system in terms of gas transport?

To transport O2 from the lungs to the tissues (B) Signup and view all the answers

What is the primary function of the epiglottis during swallowing?

To close off the glottis from the trachea (A) Signup and view all the answers

What is the main difference between the true and false vocal cords?

The true vocal cords are involved in speech production, while the false vocal cords are not (D) Signup and view all the answers

During normal breathing, what happens to the glottis?

It becomes wider and more triangular (D) Signup and view all the answers

What controls the pitch of the voice during speech production?

The tension of the true vocal cords (D) Signup and view all the answers

What is the primary function of the epiglottis in relation to swallowing?

Elevation and forward movement of the larynx and pharynx (D) Signup and view all the answers

What is the purpose of the mucous membrane covering the vocal cords?

To facilitate the production of speech sounds (B) Signup and view all the answers

Which part of the pharynx is involved in the passage of air and food?

Oropharynx (B) Signup and view all the answers

What is the purpose of the paranasal sinuses in the skull?

To reduce the weight of the skull (D) Signup and view all the answers

What is the function of the larynx in relation to the trachea?

To aid in keeping particles out of the trachea (C) Signup and view all the answers

Which of the following is NOT a function of the epiglottis?

Production of sound through vocal cord vibration (B) Signup and view all the answers

What is the anatomical location of the pharynx in relation to the nasal cavity and larynx?

Posterior to the nasal cavity and anterior to the larynx (B) Signup and view all the answers

What is the primary purpose of the goblet cells in the trachea?

To trap incoming particles and prevent their entry into the lungs (A) Signup and view all the answers

What is the characteristic of the tracheal wall that provides support and structure?

Incomplete cartilaginous rings (A) Signup and view all the answers

What is the term for the tubular passageway for air that extends from the larynx to the 5th thoracic vertebra?

Trachea (B) Signup and view all the answers

What is the point at which the lower respiratory tract begins?

After the larynx (C) Signup and view all the answers

What is the term for the branches of the trachea that lead to the right and left lungs?

Primary bronchi (D) Signup and view all the answers

What is the characteristic of airflow in the larger airways of the respiratory tree?

Higher flow volume and velocity (B) Signup and view all the answers

What is the main function of the visceral pleura?

To directly cover the lung (B) Signup and view all the answers

What is the primary determinant of perfusion pressure in the lungs?

Air pressure within the alveoli and conducting zones (D) Signup and view all the answers

What is the main function of the bronchioles?

To give rise to alveolar ducts (C) Signup and view all the answers

What is the primary role of the parietal pleura?

To attach the lungs to the thoracic cavity (D) Signup and view all the answers

What is the primary mechanism of gas flow in the respiratory system?

Gas flow driven by the attachments of the muscles to the ribs and diaphragm (A) Signup and view all the answers

What is the primary site of gaseous exchange in the respiratory system?

Alveoli-capillary membrane (D) Signup and view all the answers