muscle contraction (characterictic of muscle (Excitability, Conductivity,…
type of muscle
skeletal muscle ; attach to skeleton
cardiac muscle; only in the wall of the heart
characterictic of muscle
acetylcholine(ACH) in syneptic cleft bind to the receptor sarcolemma
the action potential is propagated along sarcolemma and down to T-tubule . This trigger the release of Ca2+
Ca2+ bind to troponin and expose myosin binding site. ATP bind to myosin cause it to be in resting .
myosin bind to actin to form cross bridge
ATP hysrolysed by myosin atpase into ADP+PR cause myosin detach from actin and the thin filament slide to centre of sacromere.
New ATP bind to myosin causing head return to resting position and tropomyosin restored blocking action active site;
Muscle Fiber Relax
smooth muscle; found in the wall of hollow organ