-attaches to the skeleton
-shapes the body and gives you the ability to move
-most of the muscle tissue in the body
-consciously controlled
-striated

Skeletal Muscle/Voluntary Muscle

-large, long cylindrical cells that makes up skeletal muscle
-multinucleated

Fibers

-membrane enclosing a striated muscle fiber

Sarcolemma

-a contractile fibril of skeletal muscle
-made up of myofilaments

Myofibrils

-composed of actin and myosin, which slide past each other during muscle activity to bring about shortening and contracting of the muscle cells

Myofilaments

-contractile units of muscle
-extends from the middle of one I band (its Z disc) to the middle of the next along the length of the myofibrils

Sarcomere

-deep invagination of the sarcolemma

Transverse Tubule (t tubule)

-pairs of tranversely oriented channels that are confluent with the sarcotubules, which together with an intermediate T tubule constitute a triad of skeletal muscle

Terminal Cisterns

-regions where the sarcoplasmic reticulum terminal borders a t tubule on each side.

Triads

-delicate areolar connective tissue that encloses each muscle fiber

Endomysium

-collagenic membrane surrounding several muscle fibers

Perimysium

-bundle of fibers

Fascicle

- large number of fascicles bounded together by dense connective tissue

Epimysium

-coarser sheets of dense connective tissue that bind muscles into functional groups

Deep Fascia

-a muscles more movable attachment

Insertion

- a muscles immovable attachment

Origin

- junction between an axon of a motor neuron and a muscle cell

Neuromuscular/Myoneural Junction

-a neuron and all the muscle fibers it stimulates

Motor Unit

-small fluid-filled gap separating the neuron and muscle fiber membranes

Synaptic Cleft