Describe the placenta
A) The placenta is a layer of cells that surround the yolk sac.
B) The placenta forms the interface between the inner cell mass and the trophoblast.
C) The placenta forms the interface between the embryonic/fetal system and the maternal system.
D) The placenta forms the interface between the blastocoele and the amniotic cavity.
E) The placenta contains fluid that surrounds and cushions the embryo or fetus.
Answer: C
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Compared to the young, elderly individuals have ________ epidermal dendritic skin cells.
A. more B. fewer
If reciprocal innervation failed during a stretch reflex, the consequence might be that
A. the overall movement would be diminished due to opposing muscles contracting simultaneously. B. the complete loss of movement due to lack of stimulation of the effector muscle. C. the overall movement would be exaggerated due to the lack of regulation from opposing muscle contraction.
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Answer the following statement true (T) or false (F)