The central principle of physiology is
A) nutrition.
B) reflexes.
C) homeostasis.
D) stimulation.
E) temperature regulation.
Answer: C
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The response of the body to decreasing blood pressure will NOT cause which of the following?
a) Dehydration b) Formation of angiotensin II c) Stimulate the kidneys to secrete rennin d) Formation of ADH e) Increased vasoconstriction
Manganese ions block the calcium channels in the cardiac muscle membrane. How would the presence of manganese in the extracellular fluid affect the contraction of the heart muscle?
A) The refractory period would be shorter. B) The plateau phase of contraction would be longer. C) The contraction phase would be prolonged. D) The heart rate would increase. E) The heart would beat less forcefully.
The ____________________ plays a role in planning and initiating voluntary activity by providing input to the cortical motor areas
Fill in the blank(s) with correct word
A rise in plasma potassium concentration __________ stimulates aldosterone secretion by the __________ cortex
Fill in the blank(s) with correct word