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BIO 669 Quiz 5 with Correct Answers

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BIO 669 Quiz 5 with Correct Answers What is the conducting airways? - ANSWER-The mechanical act of having airflow into and out of the alveoli and respiratory bronchioles. Do not participate in gas exchange Components: the nasopharynx, oropharynx, larynx, trachea, bronchi, and nonrespiratory bro...

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  • November 10, 2024
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BIO 669 Quiz 5 with Correct Answers


What is the conducting airways? - ANSWER✔✔-The mechanical act of having airflow into and out of the

alveoli and respiratory bronchioles.




Do not participate in gas exchange




Components: the nasopharynx, oropharynx, larynx, trachea, bronchi, and nonrespiratory bronchioles.


What is respiratory airways? - ANSWER✔✔-Actual exchange of oxygen and carbon dioxide across the

membrane




Components: Respiratory bronchioles, alveolar ducts and alveoli


what are type 1 alveolar cells? - ANSWER✔✔-structural- help allow for exchange across the membrane


what are type 2 alveolar cells? - ANSWER✔✔-surfactant producers


What does surfactant do? - ANSWER✔✔-protein that reduces surface tension inside the alveolar or

respiratory membrane.




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helps to interfere with the hydrogen bond (what makes things tighter) and loosen it so that the alveoli

can inflate


what happens to the pulmonary artery during acidemia? - ANSWER✔✔-The pulmonary artery constricts.


How many of the pulmonary veins are filled with blood? - ANSWER✔✔-1/3


why does the pulmonary artery constrict during acidemia? - ANSWER✔✔-constricts to reduce blood flow

to an area that has CO2 build-up


What is the alveolocapillary membrane? - ANSWER✔✔-It is formed by shared alveolar and capillary

walls, structures include the thin membrane of alveolar epithelium, alveolar basement membrane,

interstitial space, capillary basement membrane, and capillary endothelium.




the wall that oxygen and CO2 have to cross for respiration to occur


what does the caliber of the pulmonary artery mean? - ANSWER✔✔-the radius


what happens to the pressure in the thoracic cavity as your chest expands? - ANSWER✔✔-the pressure

of the thoracic cavity drops causing inspiration (Air going in)


what direction does air go in regard to pressure? - ANSWER✔✔-from high pressure to low pressure, like

fluid


what is the visceral layer connected to? - ANSWER✔✔-it is connected to the lungs


what is the parietal layer connected to? - ANSWER✔✔-it is connected to the chest wall


What does pleural fluid do? - ANSWER✔✔-it connects the parietal and the visceral layer and helps to

reduce friction

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what is the function of the pulmonary system? - ANSWER✔✔-ventilate the alveoli, diffuse gases into and

out of the blood (respiration), perfuse the lungs with blood so the body receives oxygen


What does a spirometer do? - ANSWER✔✔-measures volume of air that we are able to control


What is vital capacity? - ANSWER✔✔-the greatest volume of air that can be expelled from the lungs after

taking the deepest possible breath.


What is tidal volume? - ANSWER✔✔-the amount of air you move in and out during quiet breathing


What is inspiratory reserve volume? - ANSWER✔✔-additional inspired air over and above tidal volume


What is expiratory reserve volume? - ANSWER✔✔-volume of air in excess of tidal volume that can be

exhaled forcibly


What is residual volume? - ANSWER✔✔-Air in lungs after maximal expiration that we are not able to

fully eliminate.


Cannot be measured on spirometry


what is functional residual capacity? - ANSWER✔✔-Combined residual and expiratory reserve volumes

(ERV + RV)




the equilibrium point of lungs wanting to collapse and chest wall wanting to expand.


what happens with a disease state like COPD and emphysema, when addition air is trapped in the lungs?

- ANSWER✔✔-the residual volume increases, causing the other volumes to increase, reducing inspiratory

reserve volume




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