In hypocalcemia,
A. depolarization is prevented.
B. PTH production is reduced.
C. blood calcium levels are increased.
D. neuromuscular excitability increases.
E. neuromuscular excitability decreases.
D
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Which serous membrane covers the external surface of an organ?
A. The parietal layer B. The muscle layer C. The visceral layer D. The ventral layer E. The dorsal layer
A person with type A blood can safely donate RBCs to someone of type ________ and can receive RBCs from someone of type ________.
A. A; B B. O; AB C. AB; O D. O; O E. B; A
What you may not know is, turkeys (like most avian species) have BARORECEPTORS. What fun, allows us to apply some PHYS! Assuming blood pressure regulation by aortic baroreceptors in birds is operationally similar to what we see in humans (it is), how would Tom the Turkey's hemorrhage be expected to IMMEDIATELY affect the activity of his baroreceptors?
a. Tom's baroreceptors would increase their rate of firing to all medullary cardiovascular center cell types. b. Tom's baroreceptors would increase their rate of firing to cells in his medulla oblongata (i.e. the Cardiovascular Control Center). In turn, this would cause an increased sympathetic discharge to his heart and an increased parasympathetic discharge to his veins and arterioles. c. Tom's baroreceptors would decrease their rate of firing to cells in his medulla oblongata (i.e. the Cardiovascular Control Center). In turn, this would cause an increased sympathetic discharge to his heart as well as to his veins and arterioles. d. Tom's baroreceptors would decrease their rate of firing to cells in his medulla oblongata (i.e. the Cardiovascular Control Center). In turn, this would cause an increased parasympathetic discharge to his heart and an increased sympathetic discharge to both his veins and his arterioles. e. A hemorrhage would not affect the activity of Tom's barorecepto
The thoracic duct drains lymph into the
A. left subclavian vein. B. right subclavian vein. C. right internal jugular vein. D. left brachiocephalic vein. E. left subclavian artery.