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Storage, release, and uptake of calcium
Extension of sarcolemma - penetrate the muscle cells to spread action potential and cause SR to release calcium
cell membrane surrounding muscle cells
organelle in cells that produce energy via cellular respiration
component of skeletal muscle, composed of myofilament and sarcomeres
composed of actin and myosin
anchors neighboring sarcomeres to one another
thin filaments
thick filaments
contains both actin and myosin - doesn't change size with muscle contraction
contains only myosin
Contains only actin
regulatory protein that calcium binds to
regulatory protein that blocks binding sites
toward the midline
away from the midline of the body
toward the bottom
towards the head
closer to the trunk, in reference to an extremity
referencing the extremity, farther from the trunk
close to the surface
away from the surface; underneath
towards the front of the body; ventral
towards the back of the body
dividing body into right and left (medial and lateral)
dividing front and back (anterior and posterior)
dividing top and bottom