Concept explainers
To analyze:
The meaning of the statement “a whole muscle responds to a stimuli in graded fashion” and the two ways to increase the force of contraction.
Introduction:
The muscular system is the set of muscles that are present in the body adhered to the skeletal system. The muscles are divided into several types, namely cardiac muscles which are involuntary, smooth muscles and skeletal muscles which are voluntary. The muscles of the body help in the body's movement, circulate blood through the body and helps in maintaining the posture of the body. The skeletal muscle fibers and the motor neuron collectively form the motor unit. A single muscle contraction can be due to the result of the working of several motor units together.

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Chapter 9 Solutions
Seeley's Anatomy & Physiology
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