**Question:** Sperm acquires motility in

A. epididymis
B. testis
C. seminal vesicles
D. prostate gland

**Core Concept:** Spermatozoa, also known as sperm cells, undergo further development and maturation after ejaculation in the male reproductive system. Motility refers to the ability of sperm to move and fertilize an egg.

**Why the Correct Answer is Right:** Sperm acquire their motility primarily in the epididymis, a coiled tubular structure located in the scrotum. The epididymis plays a crucial role in sperm maturation and the acquisition of motility. The sperm undergoes a process called spermiation, which involves the release of mature sperm into the epididymal tubule.

**Why Each Wrong Option is Incorrect:**

A. Testis (Testicle) - Although sperm production takes place in the testes, sperm acquire their motility *after* passing through the epididymis, not within the testes.
B. Seminal vesicles - These glands secrete seminal plasma rich in nutrients, enzymes, and factors that protect the sperm, but they do not directly contribute to sperm motility.
C. Seminal vesicles (Repeated for emphasis) - Similar to option B, seminal vesicles play a role in producing seminal plasma but not directly influencing sperm motility.
D. Prostate gland - While the prostate gland is crucial for producing seminal plasma, it does not directly contribute to sperm motility. Sperm motility is primarily determined by the epididymis.

**Clinical Pearl:** Understanding the role of different male reproductive system organs is essential for understanding infertility cases, as abnormalities in these structures can impact sperm development and motility, leading to male infertility.

**Correct Answer:** A. Epididymis - This option correctly identifies the site where sperm acquire their motility after being produced in the testes.