Nokea
Structurally, the testicle is made up of:
- A. intratesticular spermatic ducts;
- B. lobules, delineated by connective septa;
- C. the cortical zone, in the center;
- D. the medullar zone, at the periphery;
Correct Answer: B
Rationale: The correct answer is B: lobules, delineated by connective septa. The testicle is structurally organized into lobules separated by connective tissue septa. Each lobule contains seminiferous tubules where sperm production occurs. This organization allows for efficient production and transport of sperm.
Incorrect choices:
A: Intratesticular spermatic ducts - Incorrect, as the testicle contains seminiferous tubules, not spermatic ducts.
C: The cortical zone, in the center - Incorrect, as the testicle structure does not have a defined cortical zone.
D: The medullar zone, at the periphery - Incorrect, as the medullary zone is not at the periphery but rather towards the center of the testicle.
You may also like to solve these questions
Which one of the following is NOT one
- A. spermatid of the secondary sex characteristics
- B. primary spermatocyte typical of males?
- C. secondary spermatocyte
- D. deepening voice
Correct Answer: A
Rationale: The correct answer is A because a spermatid is a mature male germ cell that arises from the process of spermatogenesis, not a secondary sex characteristic.
- B is incorrect as a primary spermatocyte is indeed typical of males in the process of spermatogenesis.
- C is incorrect as a secondary spermatocyte is an intermediate stage in spermatogenesis.
- D is incorrect as deepening voice is a secondary sex characteristic associated with male puberty.
Which structure is formed by the union of the duct from the seminal vesicle and the ampulla of the vas deferens?
- A. Urethra
- B. Spermatic cord
- C. Inguinal canal
- D. Ejaculatory duct
Correct Answer: D
Rationale: The correct answer is D: Ejaculatory duct. This structure is formed by the union of the duct from the seminal vesicle and the ampulla of the vas deferens. The ejaculatory duct plays a crucial role in male reproductive anatomy by transporting sperm and seminal fluid to the urethra for ejaculation. The other choices (A: Urethra, B: Spermatic cord, C: Inguinal canal) are incorrect because they do not involve the specific union of the duct from the seminal vesicle and the ampulla of the vas deferens, which is unique to the ejaculatory duct. The urethra is the final pathway for semen release, the spermatic cord contains blood vessels and nerves that supply the testicles, and the inguinal canal is a passage for structures like blood vessels and nerves to pass through the abdominal wall.
Human egg cells are most similar to human sperm cells in their
- A. degree of motility
- B. amount of stored food
- C. chromosome number
- D. shape and size
Correct Answer: C
Rationale: The correct answer is C: chromosome number. Human egg cells and sperm cells both have 23 chromosomes, which is half the total number of chromosomes in a human cell (46). This is crucial for maintaining the correct chromosome number in offspring. Choices A, B, and D are incorrect because:
A: Human egg cells are not motile, while sperm cells are highly motile.
B: Egg cells contain a larger amount of stored food (cytoplasmic material) compared to sperm cells.
D: Egg cells are larger and rounder in shape, while sperm cells are smaller and more streamlined.
The mother of an 18-year-old girl asks the nurse which screening her daughter should receive now based on evidence-based recommendations. Which suggestion by the nurse is best?
- A. Papanicolaou test
- B. Human papilloma virus (HPV) test
- C. Mammogram
- D. No screenings at this time
Correct Answer: D
Rationale: The correct answer is D because evidence-based recommendations do not support routine screening for cervical cancer (Papanicolaou test) or breast cancer (mammogram) in asymptomatic individuals under 21. HPV test is not recommended as a standalone screening for young women. No screenings at this time aligns with current guidelines to avoid unnecessary testing and potential harm in low-risk populations. It's important to focus on preventive measures such as vaccinations and healthy lifestyle choices rather than invasive screenings for this age group.
Rita Chen, who is 25 years old and knows that she is not pregnant, is concerned because she has not had a menstrual period for three months. Her doctor described this condition as ______.
- A. dysmenorrhea
- B. amenorrhea
- C. menometrorrhagia
- D. polymenorrhoea
Correct Answer: B
Rationale: The correct answer is B: amenorrhea. Amenorrhea refers to the absence of menstrual periods, which is the condition Rita Chen is experiencing. Dysmenorrhea is painful periods, not absence of periods. Menometrorrhagia is excessive and prolonged menstrual bleeding. Polymenorrhoea is frequent menstrual periods, not absence of periods. In this case, Rita's lack of periods for three months aligns with the definition of amenorrhea.