Before parturition,
A. the uterus stretches, causing the release of ACTH from the adenohypophysis.
B. the placenta secretes increased amounts of oxytocin.
C. fetal glucocorticoids decrease the production of progesterone by the placenta.
D. prostaglandin synthesis is inhibited.
E. there is an increase in the stimulatory effects of progesterone on the uterine muscle.
Answer: C
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Cortisol is useful in controlling inflammation reactions because it
A) destabilizes lysosomal membranes. B) decreases blood flow. C) decreases the permeability of capillaries. D) increases synthesis of prostaglandins.
A substance that provokes an immune response is called a(n)
A) thymosin. B) complement. C) chemotoxin. D) irritant. E) antigen.
What type of gland excretes products by secretion into the blood?
A. apocrine B. holocrine C. merocrine D. endocrine E. exocrine
Depolarization of the plasma membrane occurs when there is a rapid influx (inflow) of
A. potassium ions. B. sodium ions. C. calcium ions. D. chloride ions. E. amino acids.