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exam 4 hw Questions and Answers
(100% Correct Answers) Already
Graded A+
In the figure above labeled number 3, intrapulmonary
pressures are _________ and lung volumes are ___________. Ans:
© 2026 Assignment
increased; decreased
During inspiration, alveolar pressure ____________ and the
Guru01 - Stuvia
diaphragm ____________. Ans: decreases, contracts
Expert
T/F: The process of gas exchange in the lungs occurs by
passive diffusion. Ans: True
All of the following are ways in which carbon dioxide is carried
by the blood EXCEPT: Ans: bound to oxyhemoglobin.
T/F: Unloading is the process in which gases are transferred
from the blood to the tissues. Ans: True
T/F: Unloading of oxygen from hemoglobin occurs when tissue
cells have a high concentration of oxygen. Ans: False
When plasma H+ concentration decreases, ________. CO2 levels
are likely to be ______. Ans: pH rises; low
The interstitial fluid surrounding the proximal tubules
becomes very salty, with a high osmolality due to Ans: Na+
entering the cells from the filtrate in the lumen and moving
into the surrounding interstitial fluid. This creates a potential
exam 4 hw Questions and Answers
(100% Correct Answers) Already
Graded A+
In the figure above labeled number 3, intrapulmonary
pressures are _________ and lung volumes are ___________. Ans:
© 2026 Assignment
increased; decreased
During inspiration, alveolar pressure ____________ and the
Guru01 - Stuvia
diaphragm ____________. Ans: decreases, contracts
Expert
T/F: The process of gas exchange in the lungs occurs by
passive diffusion. Ans: True
All of the following are ways in which carbon dioxide is carried
by the blood EXCEPT: Ans: bound to oxyhemoglobin.
T/F: Unloading is the process in which gases are transferred
from the blood to the tissues. Ans: True
T/F: Unloading of oxygen from hemoglobin occurs when tissue
cells have a high concentration of oxygen. Ans: False
When plasma H+ concentration decreases, ________. CO2 levels
are likely to be ______. Ans: pH rises; low
The interstitial fluid surrounding the proximal tubules
becomes very salty, with a high osmolality due to Ans: Na+
entering the cells from the filtrate in the lumen and moving
into the surrounding interstitial fluid. This creates a potential
