The sarcoplasmic reticulum
A. covers the muscle fiber.
B. connects adjacent sarcomeres.
C. stores Ca2+.
D. shortens during muscle contraction.
E. transmits nerve impulses to the myofibrils.
Answer: C
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Concerning the exchange between blood and interstitial fluid at systemic capillaries,
A. more fluid is absorbed and reabsorbed than is filtered. B. more fluid is filtered than reabsorbed. C. the fluid reabsorbed into the capillary exactly matches the amount filtered by the capillary.
The cerebellum communicates with other regions of the CNS through the
A) flocculonodular lobe. B) cerebellar peduncles. C) vermis. D) lateral hemispheres. E) folia.
To form lactic acid from pyruvic acid it is necessary to have ________ present.
A. NAD B. NADH C. FAD D. FADH
Tidal volume is
A. air moved in and out with each normal breath. B. air remaining in lungs after very deep exhalation. C. maximum volume of air moved in and out during a single deep breath.