how many autosomes does a human primary spermatocyte have

HESI RN

Reproductive System Exam Quizlet

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

A. 34
B. 44
C. 54
D. 33

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.

2. What is the content of the acrosome?

A. Lipids
B. Hormones
C. Digestive enzymes
D. None of the above

Correct answer: C

Rationale: The correct answer is C: Digestive enzymes. The acrosome is a structure found in sperm cells that contains enzymes used to penetrate the egg during fertilization. Choice A (Lipids) and Choice B (Hormones) are incorrect as the primary content of the acrosome is digestive enzymes, not lipids or hormones. Choice D (None of the above) is incorrect as the acrosome does contain a specific substance, which are digestive enzymes.

3. Where does fertilization normally occur?

A. Ampulla
B. Interstitial portion
C. Isthmus
D. Infundibulum

Correct answer: A

Rationale: Fertilization typically occurs in the ampulla of the fallopian tube. The ampulla provides the ideal environment for fertilization due to the presence of cilia that help transport the egg and sperm, as well as the nourishing fluid within this region. The interstitial portion, isthmus, and infundibulum of the fallopian tube are not the primary sites for fertilization. The interstitial portion connects the fallopian tube to the uterine cavity, the isthmus is the narrowest part near the uterus, and the infundibulum is the funnel-shaped end near the ovary, where the egg is captured after ovulation.

4. What does the umbilical cord contain?

A. Pluripotent stem cells
B. Cord blood stem cells
C. Blood stem cells
D. None of the above

Correct answer: B

Rationale: The correct answer is B: Cord blood stem cells. The umbilical cord contains stem cells that are found in cord blood, known as cord blood stem cells. These stem cells have the potential to develop into various types of cells and are used in medical treatments. Pluripotent stem cells are typically found in embryos and have the ability to develop into any type of cell in the body, not specifically in the umbilical cord. Choice C, blood stem cells, is a vague term that does not specifically refer to the stem cells found in the umbilical cord. Choice D is incorrect as the umbilical cord does contain cord blood stem cells.

5. In Reproductive Health services, decision-making about RH matters is mostly done by:

A. The Woman's parents
B. The Man's parents
C. The Husband
D. The Wife

Correct answer: C

Rationale: In many societies, the husband often plays a significant role in decision-making about reproductive health matters, making choice C the correct answer. While the woman's parents might have some influence in certain cultures, the husband typically has a more direct role in such decisions. Choices A and B are less likely as the focus is on the immediate family unit rather than extended family members. Choice D, the wife, is less common in patriarchal societies where men usually have more authority in decision-making regarding reproductive health matters.