When comparing the three pathways that ATP is regenerated, which one of these pathways provides 95% of the ATP used for muscle activity and provides for hours of energy?

    When fascicles are arranged in concentric rings called sphincter muscles as illustrated above with the orbicularis oculi, this would be an example of a

This type of muscle tissue found in the walls of hollow organs is nonstriated and involuntary with contractions that are slow and sustained.

The banding pattern of a myofibril results from the 

In the steps of muscle contraction, the function of the heads of the myosin myofilament is to

This type of muscle tissue is striated and involuntary and contracts at a steady rate and is found in an organ that is found in the cardiovascular system.

The functional unit of skeletal muscle is the ______which is the region of a myofibril located between two Z discs.

Match the terms associated with a sarcomere with their definition.

  The action depicted in the illustration above is flexion.  The muscle that is contracting is attached in two places, and as it contracts, the _______moves toward the immovable or less movable bone which is the muscle’s________.  

  When fascicles are short and attach obliquely to a central tendon that runs along the length of the muscle as found with the extensor digitorum longus muscle, this would be an example of a