Muscular System Worksheet 1. Define the following terms using your own words (4 pt): General skeletal muscle structures Epimysium Fascicle Perimysium Muscle fiber Endomysium Structures of the skeletal muscle fiber Sarcolemma T-tubule Sarcoplasmic reticulum Terminal cisternae Myofibril Myofilament Thick/thin filament Components of the sarcomere A band I band Z band H zone M line Terms of muscle physiology Action potential Crossbridge cycle Excitation-contraction coupling Length-tension relationship You learned about three types of muscle tissue. Review the properties of each type of muscle tissue by filling out this table (3 pt) Three types of muscle tissue Muscle type Cardiac muscle Skeletal muscle Smooth muscle Striated or nonstriated. One or multiple nuclei of cells Strated unilbinucout Striated non- Striated multi- nucleus uni- nucleus Size and shape Voluntary or involuntary involuntary Voluntary involuntary Special features Write down the correct order of events occurring at the neuromuscular junction. Explain in your own words (1.5 pt) Draw an action potential graph showing the changes in Na+ and K+ ion and explain what the graph means. (1.5 pt)