how many arteries are there in an umbilical cord
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Reproductive System Exam Quizlet

1. How many arteries are there in an umbilical cord?

Correct answer: C

Rationale: There are two arteries in an umbilical cord. The umbilical cord contains two arteries and one vein. Artery carries blood away from the fetus, while the vein returns blood to the fetus. Therefore, choices A, B, and D are incorrect as they do not represent the correct number of arteries in an umbilical cord.

2. What is one role of the hormone estrogen?

Correct answer: A

Rationale: The correct answer is A: Estrogen stimulates the development of the milk-producing tissue in the breast. This hormone is essential in preparing the breast for milk production. Choice B is incorrect because lactoferrin production is not a primary role of estrogen. Choice C is incorrect as estrogen primarily influences the development of the breast tissue rather than specifically the nipple and duct system. Choice D is incorrect because relaxin secretion is not a function typically associated with estrogen.

3. The surgical procedure done in Bartholin's abscess is called:

Correct answer: C

Rationale: The correct answer is C: Marsupialization. Marsupialization is the surgical procedure specifically performed for Bartholin's abscess. This procedure involves creating a new duct for the Bartholin's gland to prevent future abscess formation. Choices A, B, and D are incorrect because hysterectomy involves the removal of the uterus, oophorectomy involves the removal of the ovaries, and salpingectomy involves the removal of the fallopian tubes, none of which are the appropriate procedures for treating a Bartholin's abscess.

4. Which hormone regulates the production of milk after childbirth?

Correct answer: A

Rationale: The correct answer is Prolactin. Prolactin is the hormone responsible for regulating the production of milk after childbirth. It stimulates the mammary glands in the breasts to produce milk. Oxytocin, on the other hand, is responsible for the ejection of milk from the breasts. Estrogen and progesterone play roles in the menstrual cycle and pregnancy but are not directly involved in milk production. Therefore, choices B, C, and D are incorrect.

5. How many autosomes does a human primary spermatocyte have?

Correct answer: B

Rationale: A human primary spermatocyte has 44 autosomes. Autosomes are chromosomes that are not involved in determining an individual's sex. In humans, there are a total of 46 chromosomes in a somatic cell, with 22 pairs of autosomes and one pair of sex chromosomes. Therefore, the correct answer is 44 autosomes, making choice B the correct answer. Choices A, C, and D are incorrect as they do not represent the accurate number of autosomes in a human primary spermatocyte.

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