Exam 6: The Muscular System

We are unable to exert any conscious control over the contraction of smooth or cardiac muscle. These muscles are referred to as ________ muscle.

Using the figure above and labels T through Z below, identify the structures indicated. A) fascicle B) muscle fiber C) tendon D) whole muscle 26) Structure A is a(n) ________. 27) Structure B is a(n) ________. 28) Structure C is a(n) ________. 29) Structure D is a(n) ________.

Unlike skeletal muscle, cardiac and smooth muscle do not respond at all to the nervous system, but contract on their own. Differences in the rate of contraction of smooth and cardiac muscle are due to the action of pacemakers in cardiac muscles.