Nokea
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.
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What is another name for the breast?
- A. Sebaceous glands
- B. Racemose glands
- C. Mammary glands
- D. Axillary glands
Correct Answer: C
Rationale: The correct answer is C: Mammary glands. The mammary glands are the specific glands in the breast responsible for producing milk. Sebaceous glands (choice A) are oil-producing glands in the skin, racemose glands (choice B) are not a recognized term, and axillary glands (choice D) refer to glands found in the armpit region, not the breast.
Which contraceptive option suppresses sperm motility and inhibits the implantation of the blastocyst?
- A. Copper-T
- B. Diaphragm
- C. Contraceptive pills
- D. Condom
Correct Answer: A
Rationale: The correct answer is A, Copper-T. Copper-T is an intrauterine device that releases copper ions, which suppress sperm motility and inhibit the implantation of the blastocyst. This method mainly works by preventing fertilization and, if fertilization occurs, by making the endometrium less receptive to implantation. Choices B, C, and D are incorrect. The diaphragm is a barrier method that prevents sperm from reaching the cervix; contraceptive pills mainly work by suppressing ovulation and altering cervical mucus to prevent sperm from reaching the egg; condoms are barrier methods that prevent sperm from entering the vagina.
Which of the following data should not be included in the identification data of gynecological history?
- A. Parity
- B. Lost normal menstrual period
- C. EDD (Expected date of delivery)
- D. Last delivery
Correct Answer: C
Rationale: The correct answer is C: EDD (Expected date of delivery). In a gynecological history, EDD is not typically included as it pertains more to obstetric history. Parity, lost normal menstrual period, and last delivery are important components of gynecological history. Parity refers to the number of times a woman has given birth to a fetus past 20 weeks' gestation. Lost normal menstrual period can provide insight into potential gynecological issues, while last delivery details the most recent childbirth experience. Therefore, EDD is the outlier in this context.
What forms the vaginal lining?
- A. Squamous epithelium
- B. Stratified epithelium
- C. Vascular connective tissue
- D. Muscle coat
Correct Answer: A
Rationale: The vaginal lining is primarily formed by squamous epithelium. Squamous epithelium is the correct answer because it is the type of epithelium that lines the vaginal canal. Stratified epithelium consists of multiple layers and is not the primary type found in the vaginal lining. Vascular connective tissue and muscle coat are not the main components of the vaginal lining, making them incorrect choices.
How does human sperm move?
- A. Flagella
- B. Cilia
- C. Neutrophils
- D. None of the above
Correct Answer: A
Rationale: Human sperm moves using flagella, which are whip-like structures that aid in propulsion. Flagella are tail-like structures found in sperm cells and help them swim towards the egg for fertilization. Cilia are shorter, hair-like structures that are not involved in the movement of sperm. Neutrophils are a type of white blood cell involved in the immune response and are not related to sperm locomotion.