BIOSC-139 Lecture Notes - Lecture 26: Skeletal Muscle, Histology, Endoplasmic Reticulum
22 Oct 2020
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Nervous system has to be able to talk to it. Structural design within cell that allows for elasticity. Skeletal muscle = 40-50% total body weight. Extra heat that cells produce go to muscles or if you need heat we shiver. Bring body core temp- enzymes that make body contact faster. Enzymes work faster contract muscle faster. Relating to or denoting the division of a cell nucleus into two parts by constriction without the involvement of a mitotic apparatus. Generate lot of atp to contract muscle. Full of contractile proteins arranged in myofibrils. Made up of actin and myosin (contractile units of a muscle fiber) Fibrous network between the skin and the underlying muscle and bone. Fascia is composed of two layers, a superficial layer and a deep layer. Deep fascia underlies the superficial layers, is thin but strong, densely packed, and serves to cover the muscles and to partition them into groups.
