Explain the role of Ca^{2+} in the contractile mechanism; both in the presynapse and in a muscle...
Question:
Explain the role of {eq}\rm Ca^{2+} {/eq} in the contractile mechanism; both in the presynapse and in a muscle cell.
Muscle Contraction:
In the process of muscle contraction, a muscle shortens in length and pulls on bones in order to move them. When a muscle contracts, filaments of protein called actin and myosin slide past each other and overlap.
Answer and Explanation: 1
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View this answerCalcium plays multiple roles in facilitating muscle contraction. First, action potentials reaching the end of a motor neuron (presynapse) stimulate...
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Chapter 17 / Lesson 6What happens when a muscle contracts? Learn about the muscle contraction process and the role of the proteins actin and myosin in muscle contraction, as well as the types of muscle contraction and regulatory proteins.