Answer:
smooth muscle
Explanation:
Smooth muscles are one of the three types of muscles based on anatomy, location, and regulation. Smooth muscles lack the striations which are otherwise present in skeletal and cardiac muscle tissue. The absence of striations makes them look nonstriated, which is why they are referred to as smooth.
The action of smooth muscle is usually involuntary and is under the regulation of autonomic (involuntary) division of the nervous system and the hormones released by endocrine glands. T tubule is the extension of sarcolemma into the skeletal muscle fiber and is involved in the conduction of impulses. It is absent in smooth muscles.
