Question : ESSAY 1.Describe calcium's role in the contraction of the sarcomere in : 1417109

ESSAY

1.Describe calcium's role in the contraction of the sarcomere in skeletal and cardiac muscle tissues. Include the following in your answer: sarcomere, myosin, actin, myosin-binding sites, cross bridge, sarcoplasmic reticulum, ATP, ADP and P_i, troponin, tropomyosin, and Ca²⁺ channels.

2.Describe how glycolysis, creatine, and mitochondria are important to a skeletal muscle fiber's ability to obtain energy for contraction.

3.Distinguish between twitch summation and motor recruitment in a skeletal muscle.