Epimysium relates to entire muscle as endomysium relates to a. muscle fiber b. myofibril c. muscle fasciculus d. myofilaments

Match each description to the correct phase of a muscle twitch 73. Sección Ca2+ transported back into the sarcoplasmic reticulum 74. Sarcomeres shorten 75. Depolarization occurs in the T-Tubule 76. Muscle Tension decreases A. Latent period B. Contraction phase C. Relaxation phase

The actual contractile units of muscle, called _____, extend from middle of one _____ to middle of next along length of myofibrils.   A. T tubule, M line   B. sarcoplasmic reticulum, H zone   C. sarcomeres, I band   D. sarcolemma, A band

Thirty minutes after Mary has completed a 25-km race, she begins to notice severe muscle soreness and stiffness in her legs. Her urine is dark colored. She wonders whether she may have damaged her muscles during the race. She visits the ER, and the doctor orders several blood tests. What kind of blood tests can help determine whether muscle damage has occurred?