During the secretory phase of the uterine (menstrual) cycle,
A) ovulation occurs.
B) a new functional layer is formed in the vagina.
C) uterine glands enlarge.
D) the old functional layer of the endometrium is sloughed off.
E) the corpus albicans releases hormones.
C) uterine glands enlarge.
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Of the different sources of genetic variability which one produces the variation seen by the combination of any particular male gamete to any particular female gamete?
A) independent assortment B) crossing over C) random fertilization D) mutation
The average adult has ____________________ pints of blood in the body.?
Fill in the blank(s) with correct word
Why are pregnant Rh- women given an injection of Rh immune globulin?
A) Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-A antibodies. B) Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-O antibodies. C) Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-B antibodies. D) Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-D antibodies. E) Antibodies in the injection bind fetal RBC antigens so they cannot stimulate her immune system to produce anti-A and anti-B antibodies.
A 30-year-old man is referred to a gastroenterologist for evaluation of persistent dyspepsia (indigestion)
He is noted to have other symptoms, including flushing and hypotension, and following a bone marrow biopsy, is diagnosed with systemic mastocytosis (an excessive proliferation of histamine-containing mast cells). An increased propensity for gastric and duodenal ulcers in this patient is likely ascribable to overproduction of which of the following second messengers in gastric parietal cells? A. calcium B. inositol trisphosphate C. diacyglycerol D. cGMP E. cAMP