Hormones acting in the small intestine include
a. secretin and cholecystokinin.
b. secretin and gastrin.
c. cholecystokinin and gastrin.
d. all of these answers.
e. none of these answers.
A
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After death, muscle fibers run out of ATP and calcium begins to leak from the sarcoplasmic reticulum into the sarcoplasm. This results in a condition known as
A) tetany. B) treppe. C) depolarization. D) rigor mortis. E) oxygen debt.
A sarcomere is
A. the distance between Z lines. B. formed from myosin only. C. between the I bands. D. the length of the H zone.
A ten-year-old boy falls from a tree, but manages to slow his descent somewhat by grabbing onto limbs he passes on the way to the ground. When he finally lands, he experiences some soreness on the buttocks, but otherwise does not think he is hurt until he discovers that he cannot move his fingers easily or accurately. What structures have been damaged?
What will be an ideal response?
Which of the following line the ventricles of the brain?
A. Astrocytes B. Schwann cells C. Satellite cells D. Oligodendrocytes E. Ependymal cells