The microcirculation is composed of:
a. arteries, arterioles, and capillaries.
b. arterioles, capillaries, and venules.
c. arteries, capillaries, and venules.
d. arteries, arterioles, and venules.
e. none of these answers.
B
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Bones
A. do not contribute to homeostasis. B. are not living tissue. C. have a matrix composed mostly of organic salts. D. are multifunctional.
A lever consists of
A) a tendon and a muscle. B) a rigid structure. C) a fulcrum. D) a bone, a muscle, and a nerve. E) a rigid structure and a fulcrum.
All of the following are true of steroid hormones except that they
A) are produced by the adrenal medulla. B) are derived from cholesterol. C) are produced by reproductive glands. D) bind to receptors within the cell. E) are lipids.
Describe an action potential and explain why a region of the membrane that is in the absolute refractory period cannot experience another action potential until repolarization is complete. Include the following in your answer : voltage-gated Na+ channels, voltage-gated K+ channels, activation gate, inactivation gate, threshold voltage, increasing membrane potential, and decreasing membrane
potential. What will be an ideal response?