What is the rate-limiting (regulated) step for stimulating the secretion of aldosterone?
A. Secretion of angiotensinogen by the liver
B. Secretion of ACTH by the anterior pituitary
C. Secretion of angiotensin II by the kidney
D. Conversion of angiotensinogen to angiotensin I in the blood
E. Conversion of angiotensin I to angiotensin II in the blood
Answer: D
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A) imprudent B) non-sense C) impractical D) vacuous E) insensible
A splinter penetrated into the skin on the palmar surface of the hand. The splinter nearly reached stratum basale of the epidermis. What is the final layer injured by this splinter?
A) stratum spinosum of the epidermis B) stratum lucidum of the epidermis C) stratum granulosum of the epidermis D) stratum corneum of the epidermis
The average functional lifespan of an RBC is ________
A) 20-30 days B) 50-75 days C) 100-120 days D) one year E) the body's lifetime
Which of these blood hormone levels reaches its maximum during the luteal phase?
A) Estradiol B) Progesterone C) FSH D) LH E) GnRH