1.Describe calcium's role in the contraction of the sarcomere in : 1417109
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 Pi, 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.