Skeletal Muscle Physiology worksheet

What percent of the body is smooth muscle? Striated muscle? 5 to 10%. Striated muscle is 40%
Name 3 types of muscle proteins. What is the function of each? Stroma functions solely as an inert structural element, or skeleton, to hold the rest of the structures in place. Cellular is not specifically characteristics of muscle since they also found in other metabolistically active cells. Contractile is two types of protein, myosin and actin, are essential for contraction.
What is a myofibril? Form longitudinal striations in the muscle.
Sketch a picture of a sarcomere. Label the I-band, the A-band, the Z-line and the H-zone.
Name the two filaments that make up a sarcomere. Thick filament and thin filament.
Draw a sarcomere at rest, stretched out and contracted.
What is the sliding filament theory? That muscle contraction from the relative movement of the thick and thin filament past each other.
Muscle relaxation ensues upon the removal of what? The calcium ions.