KINESIOL 1A03 Lecture Notes - Lecture 10: Endoplasmic Reticulum, Myocyte, Sarcolemma

• School: McMaster University
• Department: Kinesiology
• Course: KINESIOL 1A03
• Professor: Krista Howarth

Document Summary

Fascicle structure: perimysium endomysium somatic motor neuron blood capillary muscle fiber. Sarcolemma sarcoplasm myofibril proteins inside myofibril (myofilaments: sarcolemma: can produce action potentials. A cell that contains cytoplasm (called sarcoplasm): nuclei: found along the length of the muscle. They are underneath the sarcolemma so they do(cid:374)"t get i(cid:374) the way of (cid:373)us(cid:272)le (cid:272)o(cid:374)tra(cid:272)tio(cid:374): myofibril: contractile proteins bundled together. Runs the entire length of the muscle: filaments: (cid:272)o(cid:374)tra(cid:272)tile protei(cid:374)s that a highly orga(cid:374)ized i(cid:374) the (cid:373)yofi(cid:271)rils. Do(cid:374)"t ru(cid:374) the entire length of the muscle are shorted than the myofibrils. The proteins run from one z-disc to another, Sarcomere: one unit of thick and thin filaments, The z disc of one sarcomere is also the z disc for the one beside it. Creates a larger surface area for the sarcolemma transmits the action potential within the sarcomere. It wraps arou(cid:374)d ea(cid:272)h (cid:373)yofi(cid:271)ril a(cid:374)d comes in close association with the t tubules. The region that the sr connects with the t.