In the blastocyst, the trophoblast will become whereas the embryoblast (inner cell mass) will become .

Select one:

the embryo; part of the placenta

part of the placenta; the embryo

part of the placenta; the yolk sac

the embryo; the yolk sac

Answer and Explanation

The Correct Answer is B

A. the embryo; part of the placenta. The embryoblast (inner cell mass) will become the embryo, but the trophoblast will become part of the placenta, not the embryo.

B. part of the placenta; the embryo. The trophoblast forms part of the placenta and helps in its development, while the embryoblast (inner cell mass) will develop into the embryo.

C. part of the placenta; the yolk sac. While the trophoblast does contribute to the formation of the placenta, the embryoblast (inner cell mass) develops into the embryo, not the yolk sac. The yolk sac is derived from extraembryonic mesoderm and endoderm, not the inner cell mass directly.

D. the embryo; the yolk sac. The embryoblast (inner cell mass) develops into the embryo, but the trophoblast does not become the yolk sac. The yolk sac is formed from structures surrounding the embryo, not from the trophoblast itself.

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Correct Answer is C

Explanation

A. Tubuloglomerular feedback involves the macula densa sensing changes in sodium chloride concentration and adjusting the glomerular filtration rate (GFR) via the juxtaglomerular apparatus.

B. Renal autoregulation includes mechanisms like the myogenic mechanism and tubuloglomerular feedback that maintain stable GFR despite blood pressure changes. This option is too broad and not specific to the mechanism described.

C. The myogenic mechanism refers to the smooth muscle's tendency to contract when stretched, helping to stabilize GFR by adjusting the diameter of the afferent arterioles. This is the correct answer.

D. Sympathetic control influences renal blood flow and GFR through hormonal and nervous system regulation, but it is not the specific mechanism described in the question.

A. The small intestine B. The pancreas C. The liver D. The gallbladder

Correct Answer is C

Explanation

A. The small intestine absorbs lipids but does not produce HDL (high-density lipoprotein).

B. The pancreas produces enzymes and hormones, but it does not produce HDL.

C. The liver is the primary organ responsible for the synthesis of HDL. HDL is involved in reverse cholesterol transport, carrying cholesterol from tissues back to the liver.

D. The gallbladder stores and concentrates bile but does not produce HDL.

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In the blastocyst, the trophoblast will become__________ whereas the embryoblast (inner cell mass) will become __________.

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Correct Answer is C

Explanation

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In the blastocyst, the trophoblast will become whereas the embryoblast (inner cell mass) will become .