Final Answer:
The muscularis layer of the ductus deferens is made of smooth muscle.
Step-by-step explanation:
The ductus deferens is a part of the male reproductive system that transports sperm from the testes to the urethra for ejaculation. Its muscularis layer, responsible for the movement of sperm, is composed of smooth muscle. Smooth muscle is involuntary and lacks the striations (stripes) seen in skeletal muscle.
In the context of the ductus deferens, the contraction of smooth muscle helps propel sperm through the duct, facilitating the journey from the testes to the urethra during the process of ejaculation. This muscular action is a crucial part of the male reproductive process, ensuring the transport of sperm for potential fertilization.
Smooth muscle is a type of involuntary, non-striated muscle that is found in the walls of various organs and structures in the body, including the reproductive system. The smooth muscle in the ductus deferens helps propel sperm from the testes to the urethra during ejaculation.