Types of Muscle


	Voluntary Muscle	Involuntary Muscle
	Striated Cylindrical cells are multinucleate Found attached to bone (skeletal muscle) Controlled by somatic nervous system Contracts quickly; fatigues quickly	Unstriated Spindle-shaped cells each have a single nucleus Found in the walls of tubular structures such as the gut, blood vessels and ducts. Controlled by the autonomic nervous system. Contracts slowly; fatigues slowly.
	Cardiac Muscle	Other information
	Semi-striated Cylindrical cells, each with a single nucleus, branch and connect with other cells. Found only in the heart. Controlled by the autonomic nervous system. Myogenic without fatigue.

Unstriated
Spindle-shaped cells each have a single nucleus
Found in the walls of tubular structures such as the gut, blood vessels and ducts.
Controlled by the autonomic nervous system.
Contracts slowly; fatigues slowly.

Semi-striated
Cylindrical cells, each with a single nucleus, branch and connect with other cells.
Found only in the heart.
Controlled by the autonomic nervous system.
Myogenic without fatigue.

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