The process of sperm formation is

Correct Answer: C

Rationale: Spermatogenesis is the full process of sperm formation, from spermatogonia to mature spermatozoa. 'Spermatogenesis,' is correct, per histology texts like Junqueira's Basic Histology, encompassing mitosis, meiosis, and differentiation. 'Oogenesis,' is egg formation. 'Spermiogenesis,' is the final differentiation phase, not the whole process. 'Spermatogonia,' are precursor cells, not the process. Spermatogenesis' comprehensive scope makes C the precise answer, covering all stages.

Correct Answer: D

Rationale: The large intestine includes caecum, colon, rectum, and anal canal. 'Duodenum,' is correct as the exception, part of the small intestine, per anatomy (e.g., Moore). 'Caecum,' begins the large intestine. 'Colon,' is its main segment. 'Rectum,' stores feces. Duodenum's small intestinal role distinguishes D as the accurate answer.

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.