Oestrogen levels in females

Correct Answer: B

Rationale: The correct answer is B because oestrogen levels in females rise and fall every month in response to the menstrual cycle. This hormone is produced by the ovaries and plays a key role in regulating the menstrual cycle. During the menstrual cycle, oestrogen levels increase during the first half of the cycle (follicular phase), peak around ovulation, and then decrease in the second half of the cycle (luteal phase). This cyclical pattern is essential for preparing the uterus for potential pregnancy. Choices A, C, and D are incorrect because oestrogen levels do not follow a continuous decline throughout a female's life, peak during gestation, or reach their highest level just after birth.

Correct Answer: A

Rationale: The correct answer is A: mammoplasty. "Mammo-" refers to the breast, and "-plasty" indicates surgical repair or reconstruction. This term specifically denotes surgical fixation of the breast(s). B: Mastopexy refers to a breast lift, not fixation. C: Hysteropexy involves fixing the uterus, not the breast. D: Vaginoplasty refers to surgical reconstruction of the vagina, not the breast.

Correct Answer: D

Rationale: The rete testis interposes between the seminiferous tubules and the efferent ducts in the male reproductive system. The correct answer is D because the rete testis acts as a connection between the seminiferous tubules where sperm is produced and the efferent ducts that transport the sperm out of the testes. The other choices (A, B, and C) are incorrect because they do not accurately describe the anatomical relationship between the rete testis and the structures mentioned.

Correct Answer: C

Rationale: Step-by-step rationale for why choice C (corpora cavernosa) is correct: 1. Corpora cavernosa are erectile tissue in the penis, not internal male genital organs. 2. Testicles, deferent ducts, and bulbourethral glands are actual internal male genital organs. 3. Corpora cavernosa are involved in penile erection, not in male reproductive system functions. Summary of why other choices are incorrect: A: Testicles - Produces sperm and male sex hormones. B: Deferent ducts - Transport sperm from the testicles to the urethra. D: Bulbourethral glands - Produce pre-ejaculatory fluid to lubricate the urethra.

Correct Answer: B

Rationale: The correct answer is B: pelvic cavity. The ovary is located in the pelvic cavity because it is part of the female reproductive system and is situated within the pelvis. It is specifically housed in the adnexal region of the pelvis, attached to the uterus via ligaments. The abdominal cavity (choice A) is too high up in the body to house the ovary. The inguinal region (choice C) is located in the lower abdomen near the groin and does not contain the ovary. The lumbar region (choice D) is located in the lower back and is not where the ovary is located.