Describe basic muscle morphology from the epimysium to the sarcomere.

Description should include the following:

• Epimysium
• Perimysium
• Fascicles
• Endomysium
• Muscle fibers
• Myofibrils
• Myofilaments (actin and myosin)
• Sarcomere

Process/Skill Questions:

• What are the thin and thick muscle filaments?
• What gives skeletal muscle its striated appearance?
• What happens during a concentric contraction? An eccentric contraction?