Muscular System

The different muscles structures etc

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Epimysium

Surrounds skeletal muscle and all fascicles in a muscle

Perimysium

Surrounds individual fascicles and separates muscle into small compartments

Endomysium

surround individual muscle fibers

Sarcolemma

cell membrane of a muscle fiber(cell)

Sarcoplasm

cytoplasm of a muscle fiber(cell)

Myofibril

threads of protein inside the sarcoplasm

Myosin

thick protein filament inside a myofibril

Actin

thin protein filament inside a myofibril

Iband

actin filaments attached to Z-lines

Z Line

protein to which actin bid

A band

Regime where myosin Overlaps actin

Sarcomere

units made from Z line to line

Motor nueron

nerve cells that connect muscle fibers

Nueromuscular junction

connection between motor nueron and muscle fiber

Nuerotransmitters

Chemical thaat gos from nueron to muscle fibers

Motor units

Consist of motor nueron and muscle fiber