Anatomy & Physiology

9.

During relaxation, muscles return to their original length because of all of the following, except __________________. a. Actin and myosin actively pushing away from one another b. The contraction of opposing muscles c. The pull of gravity d. The elastic nature of the sarcolemma e. Elastic forces

10.

Length tension relationship says … a. Longer muscles can generate more tension than shorter muscles. b. The greater the zone of overlap in the sarcomere, the greater tension the muscle can develop. c. The greatest tension is achieved in sarcomeres where actin and myosin initially do not overlap. d. There is an optimum range of actin and myosin overlap that produces the greatest amount of tension. e. Both B and D are correct.

Anatomy & Physiology Study Guide

Answer key found on page 366.

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