BIO 669 Quiz 5 Answers Latest Update 2024 (Already Passed)
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Course
BIO 669
Institution
BIO 669
BIO 669 Quiz 5 Answers Latest Update 2024 (Already Passed)
What is the conducting airways? - Answers 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, b...
BIO 669 Quiz 5 Answers Latest Update 2024 (Already Passed)
What is the conducting airways? - Answers 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? - Answers Actual exchange of oxygen and carbon dioxide across the
membrane
Components: Respiratory bronchioles, alveolar ducts and alveoli
what are type 1 alveolar cells? - Answers structural- help allow for exchange across the membrane
what are type 2 alveolar cells? - Answers surfactant producers
What does surfactant do? - Answers protein that reduces surface tension inside the alveolar or
respiratory membrane.
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? - Answers The pulmonary artery constricts.
How many of the pulmonary veins are filled with blood? - Answers 1/3
why does the pulmonary artery constrict during acidemia? - Answers constricts to reduce blood flow to
an area that has CO2 build-up
What is the alveolocapillary membrane? - Answers 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? - Answers the radius
what happens to the pressure in the thoracic cavity as your chest expands? - Answers the pressure of
the thoracic cavity drops causing inspiration (Air going in)
what direction does air go in regard to pressure? - Answers from high pressure to low pressure, like fluid
what is the visceral layer connected to? - Answers it is connected to the lungs
what is the parietal layer connected to? - Answers it is connected to the chest wall
What does pleural fluid do? - Answers it connects the parietal and the visceral layer and helps to reduce
friction
what is the function of the pulmonary system? - Answers 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? - Answers measures volume of air that we are able to control
What is vital capacity? - Answers the greatest volume of air that can be expelled from the lungs after
taking the deepest possible breath.
What is tidal volume? - Answers the amount of air you move in and out during quiet breathing
What is inspiratory reserve volume? - Answers additional inspired air over and above tidal volume
What is expiratory reserve volume? - Answers volume of air in excess of tidal volume that can be
exhaled forcibly
What is residual volume? - Answers Air in lungs after maximal expiration that we are not able to fully
eliminate.
Cannot be measured on spirometry
what is functional residual capacity? - Answers 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?
- Answers the residual volume increases, causing the other volumes to increase, reducing inspiratory
reserve volume
resets where lung and chest wall come to the equilibrium of not having to overwork to expand or
contract
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