The muscularis usually contains two layers of _____ muscle.SmoothSkeletalStriated
The muscularis refers to the specific layer in the wall of certain hollow organs, such as the gastrointestinal tract and blood vessels
The muscularis refers to the specific layer in the wall of certain hollow organs, such as the gastrointestinal tract and blood vessels. In the muscularis layer, there are typically two layers of smooth muscle.
Smooth muscle is a type of involuntary muscle consisting of nonstriated muscle fibers. It is called “smooth” due to its lack of striations, which are the alternating dark and light bands seen in skeletal muscle fibers under a microscope. Smooth muscle is responsible for various movements in the body, including the contraction and relaxation of hollow organs to propel substances through them, such as food through the digestive tract or blood through blood vessels.
Unlike skeletal muscle, which is attached to bones and is under conscious control, smooth muscle is not directly controlled by the conscious mind. It is innervated by the autonomic nervous system, meaning it is regulated by involuntary processes within the body. This allows smooth muscle to contract and relax in response to various stimuli without conscious effort.
In summary, the muscularis layer usually contains two layers of smooth muscle, which is a type of nonstriated, involuntary muscle responsible for the movement of substances through hollow organs.
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