The hypoblast layer of the blastodisc is made of
A. cuboidal cells and forms during the pre-embryonic period.
B. cuboidal cells and forms during the fetal period.
C. columnar cells and forms during the morula stage.
D. columnar cells and forms during gastrulation.
Answer: A
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If there is an increase in systemic blood pressure, the resulting stretch of afferent arterioles results in reflexive
A. vasoconstriction of efferent arterioles to raise GFR. B. vasoconstriction of afferent arterioles to keep GFR normal. C. vasodilation of efferent arterioles to lower GFR. D. vasodilation of afferent arterioles to keep GFR normal.
Organisms that thrive in the extreme cold are known as
A) Psychrotrophs. B) Cryomorphs. C) Mesotrophs. D) Picnomorphs.
The function of the cerebral association areas is
A) to interpret sensations. B) reasoning and judgment. C) to analyze sensory experiences. D) all of the above.
The superior portion of the esophagus contains smooth muscle in its wall.
Answer the following statement true (T) or false (F)