Skeletal Muscles Flashcards
what is the epimysium
the skin of the muscles
layers of the muscle
muscle - muscle fibre - myofibrils
function of sarcomeres
to aid with contraction
what is the sarcoplasmic reticulum for
where calcium is stored
what do muscle spindles detect
change in length
what do golgi tendons detect
tension
what is the H zone in sarcomere
the area of overlap
what is the A band in the sarcomere
usually where the myosin filament is
what is a motor unit
skeletal muscle cell connected to spinal chord via a neuromuscular junction and a axon
how to change size of contraction
change motor unit or recruit more motor units
what is the neuromuscular junction
the point where the axon connects to the muscle fibre
excitation contraction coupling is
action potential received first, muscle contraction occurs after
what does the sliding filament do
shortening of muscle fibre length
what is the cross bridge mechanism for
myosin heads bind to actin filaments to power contractions
