BIOL 2213 Study Guide - Midterm Guide: Myosin Light-Chain Kinase, Endoplasmic Reticulum, Sliding Filament Theory
29 Aug 2016
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Topic list for chapter 9 muscle physiology. 9a. 1 know the characteristics of the three different types of muscle tissue in terms of their structure (fig. Skeletal muscle- contracts muscles: voluntary, multinucleated, has transverse tubules, myofibrils, and sarcomeres, specific intracellular structures. Cardiac muscle- contracts heart: one or two centrally located nuclei, striated and use the sliding filament mechanism, has intercalated discs with desmosomes and gap junctions. Gap junctions critical to hearts ability to be electrically coupled: have node cells that have the ability to stimulate their own action potentials= automaticy or autorhythmicity, have a long refractory period to prevent tetanic contractions. 9-2 and 9-3) and the names of the different filaments in a myofibril. Myofibril- structures that give skeletal and cardiac muscle their striated appearance: made of arrangements of actin (thin) and myosin (thick, sarcomere- one unit of the repeating pattern of actin and myosin. 9a. 2 - know the molecular mechanism of a skeletal muscle contraction (figs.
