Match the muscle types with the following characterizations

Smooth muscle

• found in the walls of many hollow organs

• no striations

• peristalsis and mixing are both principal functions

• the visceral type contains many gap junctions

• T-tubules are absent

Skeletal muscle

• contains many nuclei, near the sarcolemma

• control is mainly voluntary

• extensive sarcoplasmic reticulum; stores and releases calcium

• principal functions include movement of bones, heat production, and posture

Cardiac muscle

tubules are large in diameter and form dyads with the sarcoplasmic reticulum

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