Bidder's canal receives __________.

Correct Answer: D

Rationale: The correct answer is D: Oxygenated blood. Bidder's canal is a part of the male reproductive system and functions to transport oxygenated blood to the testicles. This is essential for maintaining the temperature required for sperm production. Eggs (A) are not transported through Bidder's canal as it is specific to male reproductive functions. Sperms (B) are produced in the testicles but are not transported through Bidder's canal. Ammonia (C) is a waste product and not involved in the circulation within the male reproductive system.

Correct Answer: B

Rationale: The correct answer is B: LH (Luteinizing Hormone) triggers ovulation. Firstly, LH surge stimulates the release of the mature egg from the ovary. Secondly, it plays a crucial role in the development of the corpus luteum, which produces progesterone to prepare the uterus for potential implantation. GnRH (Choice A) is the hormone that stimulates the release of LH and FSH (Choice C) from the pituitary gland, but it does not directly trigger ovulation. Estrogen (Choice D) is involved in the regulation of the menstrual cycle and prepares the uterine lining for implantation but does not directly trigger ovulation.

Correct Answer: B

Rationale: The correct answer is B: Estrogen. Granulosa cells are located in the ovarian follicles and are responsible for producing estrogen, a key female sex hormone. Estrogen plays a crucial role in the menstrual cycle, pregnancy, and development of secondary sexual characteristics. Progesterone is mainly produced by the corpus luteum, testosterone is primarily produced by the testes in males, and aldosterone is synthesized in the adrenal glands. Granulosa cells do not secrete these hormones, making choices A, C, and D incorrect.

Correct Answer: C

Rationale: The correct answer is C: Metrorrhea. Metrorrhea refers to the discharge of pus or mucus from the uterus. Dysmenorrhea (A) is severe menstrual pain, Hypomenorrhea (B) is abnormally light menstrual flow, and Oligomenorrhea (D) is infrequent or light menstrual periods. Therefore, based on the definition provided in the question, Metrorrhea is the correct term for the discharge of pus or mucus from the uterus.

Correct Answer: D

Rationale: The correct answer is D: Perineum. The perineum is the region between the vaginal orifice and anus. It includes the external genitalia and the area surrounding the anus. The peritoneum (A) is a membrane lining the abdominal cavity, not related to this specific region. Cul-de-sac (B) refers to a pouch-like structure in the abdominal or pelvic cavity, not the area specified in the question. Sac (C) is a general term and does not specifically denote the region between the vaginal orifice and anus. Therefore, the correct answer is D as it accurately describes the anatomical location in question.