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Multiple Choice
The ductus deferens has a muscularis layer made of ______ muscle.
A
striated
B
cardiac
C
smooth
D
skeletal
Verified step by step guidance
1
Step 1: Understand the structure and function of the ductus deferens. The ductus deferens, also known as the vas deferens, is a part of the male reproductive system that transports sperm from the epididymis to the ejaculatory ducts.
Step 2: Recall the types of muscle tissue in the human body. There are three main types: smooth muscle, cardiac muscle, and skeletal muscle. Smooth muscle is involuntary and found in walls of hollow organs, cardiac muscle is involuntary and specific to the heart, and skeletal muscle is voluntary and attached to bones.
Step 3: Identify the muscularis layer of the ductus deferens. The muscularis layer is responsible for peristaltic contractions that propel sperm through the ductus deferens. This type of movement is characteristic of smooth muscle tissue.
Step 4: Eliminate incorrect options. Striated muscle refers to skeletal and cardiac muscle, which are not found in the ductus deferens. Skeletal muscle is voluntary and associated with movement of bones, while cardiac muscle is specific to the heart. Smooth muscle is the correct type for the ductus deferens.
Step 5: Conclude that the muscularis layer of the ductus deferens is composed of smooth muscle, as it facilitates involuntary peristaltic contractions necessary for sperm transport.