Mechanical stress applied to bone increases _____ activity in bone tissue.
a. chondrocyte
b. osteoclast
c. osteoblast
Answer: c. osteoblast
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Most immune responses originate in
A) secondary lymphoid structures. B) macrophages. C) the skin. D) primary lymphoid structures. E) the liver.
Glucose anabolism is called:
a. glycolysis b. glycogenesis c. glucagon d. both A and B above
During contraction of a sarcomere,
a. the Z discs move farther apart b. the A bands become thicker c. the I bands become narrower d. the thin filaments become shorter e. events c and d occur
Alveolar ventilation (VA) refers to the
A) movement of air into and out of the lungs. B) amount of air reaching the alveoli each minute. C) movement of dissolved gases from the alveoli to the blood. D) movement of dissolved gases from the blood to the alveoli. E) utilization of oxygen by alveolar cells to support metabolism.