ANATOMY 2300.01 Study Guide - Midterm Guide: Glycolysis, Myofibril, Cell Membrane
4 Oct 2018
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Muscle : muscle is a tissue and a organ. Epimysium functions of skeletal muscle movement being able to contract your bones stabilize joints maintain posture generate heat comes from activity in your muscle it uses atp . Muscle fiber in middle of a fascicle (b) Skeletal muscle structure (fig 11. 4) - attached to bones by tendonds. Skeletal muscle cells (myofibers) (figs 11. 1 & 11. 2) multinucleated myobalst fus a lot fused together muscle cells pretty long a;ot of mitochondria. Muscle rich in mitochondria plasma membrane = sarcolemma: plasma me,brane of muscle cell contain many myofibrils packed with bundles of portein called mypofiberales myofibrils contain myofilaments arranged into sarcomeres. Organization of sarcomeres (see fig 11. 1) actin doublestrand of beads myosin like two bundles of golf club striations due to arrangement of myofillaments regions of a sarcomere. A band what makes thew dark stripes. I band only actin , thin filamensonly.
