The platelet release reaction is initiated by platelets binding to exposed collagen in a broken membrane.
Answer the following statement true (T) or false (F)
True
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Cardiomyocytes have a much longer repolarization period than skeletal muscles due to their
A) Voltage-sensitive Na+ channels. B) Voltage-sensitive Ca2+ channels. C) Voltage-sensitive K+ channels. D) Voltage-sensitive Cl- channels.
Postganglionic neurons release acetylcholine as part of which nervous system?
a. parasympathetic nervous system b. sympathetic nervous system c. both the parasympathetic and sympathetic nervous systems
What is the rate-limiting (regulated) step for stimulating the secretion of aldosterone?
A. conversion of angiotensin I to angiotensin II in the blood B. secretion of angiotensinogen by the liver C. conversion of angiotensinogen to angiotensin I in the blood D. secretion of ACTH by the anterior pituitary E. secretion of angiotensin II by the kidney
There are ________ primary taste sensations.
A) 2 B) 4 C) 12 D) 20 E) more than 50