The exchange of nutrients and gases between the blood and tissue cells is the primary function of
A. veins.
B. arteries.
C. arterioles.
D. capillaries.
E. venules.
D
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Indicate whether the statement is true or false
Thin-walled outpouchings of the alveolar ducts of the lungs are the ___________________.
A) alveolar ducts B) alveolar sacs C) alveoli D) respiratory bronchioles
The rectus femoris is an example of which muscle shape?
A. Triangular B. Fusiform C. Pennate D. Parallel E. Elongated
Cytotoxic T-lymphocytes destroy infected cells by
A. increasing the permeability of infected cells and preventing apoptosis. B. decreasing the permeability of infected cells and preventing apoptosis. C. increasing the permeability of infected cells and inducing apoptosis. D. decreasing the permeability of infected cells and inducing apoptosis.