The penis contains a short bone called the coccyx that extends during erections.

Correct Answer: B

Rationale: False (B): The penis has no bone; the coccyx is in the spine. Erections are vascular. True (A) is incorrect.

Correct Answer: C

Rationale: The rete testis (C) connects seminiferous tubules to the epididymis. Pampiniform (A) is vascular, uterine tubes (B) are female, and ductus deferens (D) is later.

Correct Answer: B

Rationale: The functional layer of the endometrium (B) rebuilds monthly. Perimetrium (A) is outer, myometrium (C) is muscle, and exometrium (D) is fictional.

Correct Answer: C

Rationale: Implantation triggers hCG production by the embryo (C) to maintain the corpus luteum. Others (A, B, D) are incorrect.

Correct Answer: C

Rationale: Internal female organs are ovaries, uterine tubes, uterus, and vagina (C). Ureters (A) and urethra (D) are urinary, labia (B) is external.