Problem
A. What are the five major functions of skeletal muscle?
B. Explain the skeletal muscle characteristics of contractility, extensibility, and elasticity. How do these differ?
C. Identify the location and function of these connective tissue structures associated with muscle: endomysium, perimysium, epimysium, deep fascia, and superficial fascia.
D. Place the following gross anatomic and microscopic anatomic structures in order from largest to smallest: fascicle, myofibril, myofilament, muscle, muscle fiber, and sarcomere. Describe their anatomic relationship.
E. What is the function of Ca2+ in skeletal muscle contraction?
F. Describe the four processes that repeat in crossbridge cycling to cause sarcomere shortening.
G. What causes the release of the myosin head from actin? What resets the myosin head?
H. What are three anatomic or physiologic differences between skeletal muscle and cardiac muscle?
I. Where is smooth muscle located in the human body?