01:119:115 Lecture Notes - Lecture 21: Conjunctiva, Choroid, Sclera

• School: Rutgers University
• Department: Biological Science
• Course: 01:119:115
• Professor: Hernandez

Document Summary

Helps sustain contractions for about 15 seconds: b. breakdown of glycogen also helps generate atp i. light/moderate muscle activity metabolizes glycogen aerobically enough power to sustain contractions for about 1 hour ii. Ap travels to interior muscle fiber along transverse tubules (t tubules) c. ap along t tubules cause sarcoplasmic reticulum (sr) to release calcium (similar to endoplasmic reticulum, does same thing/function, sources of calcium, released into cytosol, in response to ap, in response to acetycholine, etc. ) d. calcium binds to troponin complex on thin filaments, exposing myosin binding sites e. stop of motor neuron input relaxes muscle f. transport protein in sr pumps calcium out of cytosol ( and back into sarcoplasmic reticulum) g. regulatory proteins on thin filaments shift back to cover myosin binding sites a. autoimmune disease where acetylcholine receptors on muscle fibers attacked b. treatment is available; drugs inhibit acetylcholinesterase or suppress immunity.