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ATI RN · Growth and development · Human Growth and Development Exam Questions

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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The force of blood flowing through the __________ keeps it firm.

A. amnion

B. umbilical cord

C. yolk sac

D. embryonic disk

Correct Answer: umbilical cord

Question 2 of 5

__________ supplementation early in pregnancy reduces the risk of abnormalities of the neural tube, the circulatory system, and the urinary tract.

A. Vitamin A

B. Folic acid

C. Vitamin D

D. Vitamin C

Correct Answer: Folic acid

Question 3 of 5

If pregnancy does not occur, the corpus luteum shrinks, and the __________.

A. cells begin to duplicate

B. one-celled zygote multiplies and forms a blastocyst

C. germinal period lasts only about two weeks

D. lining of the uterus is discarded

Correct Answer: lining of the uterus is discarded

Question 4 of 5

Which statement about a blastocyst is true?

A. It consists of a single cell.

B. It is a structure that feeds the developing organism.

C. Between the seventh and ninth days, it burrows deep into the uterine lining.

D. It is a membrane that helps to keep the temperature of the prenatal world constant.

Correct Answer: Between the seventh and ninth days, it burrows deep into the uterine lining.

Question 5 of 5

During prenatal development, the ectoderm folds over to form the __________, or primitive spinal cord.

A. mesoderm; neuron tract

B. neural tube

C. endoderm; neural tube

D. neuron tract

Correct Answer: neural tube

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