Large, long cylindrical cells found in skeletal muscle
Plasma membrane of muscle cells
Small fibers that run through each muscle fiber. Have alternating light (I) and dark (A) bands that give the muscle its striped appearance.
Small threadlike structures that make up myofibrils.
What are the two contractual proteins myofilaments are composed of?
A contractile unit of muscle, extends from the middle of one I band to the middle of the next along the length of the myofibrils.
Transverse Tubule (T tubule)
A point in skeletal muscle where the sarcolemma indents into the muscle cell at each junction of the a and I bands.
Tubules in skeletal muscles that run deep into the cell between cross channels.
A region where the sarcoplasmic reticulum cisternae abut a T tubule on each side.
A delicate, loose areolar connective tissue sheath found between individual muscle fibers
Several sheathed muscle fibers are wrapped by a collagenic membrane
A bundle of fibers
Forming an "overcoat" over a lage numer of fasicles. Made of dense connective tissue.
Coarse sheets fo dense connective tissue that bind muscles into functional groups and, into coardlike tendons or sheeetline aponeuroses.
Sheet like muscle that attach muscle to each other or indirectly to bone
durability, conserve space
What are the two major functions of tendons.
myoneural (neuromuscluar) junction
The junction between a nerve fiber (axon) and a muscle cell
A functional structure containing a neuron and all the muscle fibers it stimulates
A small fluid filled gap between a neuron and muscle fiber membranes