- O2 bound to hemoglobin:
|
a. |
acts the same as physically dissolved oxygen |
|
|
b. |
Comes off the hemoglobin (dissociates) more easily as you increase the oxygen partial pressure |
|
|
c. |
exerts a partial pressure |
|
|
d. |
Comes off the hemoglobin (dissociates) more easily as you increase the acidity (decrease the pH) |
|
|
e. |
all the options are correct
|
2. Air convection in mammals is driven by a smaller pressure gradient than blood convection because:
|
a. |
Bronchioles have a greater resistance to flow than arterioles |
|
|
b. |
bronchioles tend to have a smaller radius than arterioles and capillaries |
|
|
c. |
air is easier to move with pressure gradients than blood |
|
|
d. |
air generally travels farther in your body than does blood |
|
|
e. |
air is heavier than blood |
3. The rate of diffusion of gases is NOT determined by which of the following?
|
a. |
The area of the surface across which diffusion is occurring |
|
|
b. |
The mechanical energy put into the diffusing system |
|
|
c. |
The distance over which diffusion is occurring |
|
|
d. |
None of the options are correct, all of these things are important in determining rates of diffusion |
|
|
e. |
Differences in the gases' partial pressure |
4. Whole body resistance to blood flow is determined primarily by which blood vessels?
|
a. |
lymphatic vessels |
|
|
b. |
arteries |
|
|
c. |
capillaries |
|
|
d. |
veins |
|
|
e. |
Arterioles |
Step by step
Solved in 2 steps
