Chapter 10, Problem 8RQ

Summary Introduction

To determine:

The ions that enter the muscle cells when an impulse passes over the sarcolemma and triggers muscle contraction.

Introduction:

Muscle contraction is the stimulation of muscles by the virtue of an impulse. When the impulse reaches the muscle fibers, it stimulates the reaction in each sarcomere between actin and myosin filaments. Muscle contraction helps in the maintenance of posture, joint stability, and heat production.