BIOL 241 Study Guide - Midterm Guide: Atp Hydrolysis, Motor Neuron, Ion Channel

• School: University of Calgary
• Department: Biology
• Course: BIOL 241
• Professor: William Huddleston

Document Summary

Muscles composed of elongated , cylindrical cells muscle fibers. , generates force ( where they"re attached to the skeleton ) the (cid:8869) moves force generated by muscle skeleton. Muscle organization : if muscle fiber in the tissue muscle : composed of muscle bundles muscle bundle : composed of muscle fiber cells muscle bundle muscle fibers : connected have multiple nuclei through filaments , . iq?#. ktnmuyfeduesfiber o y mitochondrion myofibrils : stacked up sarcomere myofibril sarcomere. Muscles contract when sarcomere shorten chain reaction. Sarcomere shorten myofibril shortens c contract ) muscle fiber contracts. Tropomyosin proteins wrap double helix and make up a into thin tertiary around structure the actin. Actin proteins has their own myosin bonding sites. 2 polypeptides heads globular homodimers coiled around each other at each end. An atp binding site c catalytic ) Actin filaments at each end extend out from each 2- disc to the middle.