Which of these layers is shed during menses?
A) myometrium
B) perimetrium
C) basal layer of endometrium
D) functional layer of endometrium
E) both c and d
Ans: D) functional layer of endometrium
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The structure in the fetus that allows the blood to bypass the liver is the:
a. ductus venosus b. ductus arteriosus c. foramen ovale d. both B and C above
An inhibitory response
A) directly causes an action potential. B) makes an action potential more likely. C) causes ACh release. D) makes an action potential less likely. E) None of the answers are correct.
Each thin filament consists of
A) A pair of protein strands wound together. B) Chains of myosin molecules. C) 6 molecules coiled into a helical structure. D) A rod-shaped structure with "heads" projecting from each end. E) A double strand of myosin molecules.
Since erythrocytes lack the cellular machinery to make repairs, they only live:
A) 10-20 days. B) 100-120 days. C) 30-60 days D) 145-175 days.