Match the terms associated with a sarcomere with their definition.

_____________is the plasma membrane of muscle cells.

Which of the following is the correct sequence to describe the steps in muscle contraction? 1.  tropomyosin blockage is restored with the removal of the calcium and the contraction ends 2.  myosin heads attach to actin and detach pulling the actin filaments toward the center of the sarcomere 3.  calcium ions bind to troponin which changes shape, removing the blocking action of the tropomyosin 4.  nerve impulse reaches the end of an axon and ACh is released and diffuses across the synaptic cleft to attach to ACh receptors on the sarcolemma of the muscle fiber 5.  action potential travels along the sarcolemma and down the T tubule into the interior of a muscle fiber triggering calcum ion release from the sarcoplasmic reticulum

__________is globular protein located on actin where calcium binds to it causing it to change shape thus removing the blocking action of ______________.

Match the term with its correct description:

The region between which two points corresponds to the entire A band?

Oxygen debt is repaid by deep breathing, having been triggered by high levels of what in the blood?

Which of the following is the correct sequence in the sequence of electrical changes known as an action potential?

ATP generated by this pathway occurs during moderate exercise providing the endurance to run a marathon.

The diagram above depicts the contractile unit of muscle.  The sarcomere would be represented between which two points.