ANP 1105 Study Guide - Quiz Guide: Relaxed Muscle, Rigor Mortis, Myoglobin

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Jacqueline Carnegie

Document Summary

Sarcolemma: is the plasma membrane of a skeletal muscle. Muscle cell is syncytium: a very large multinucleate cell could potentially be many cells. Lots of myoglobin: an oxygen binding protein, found only in skeletal muscle, provides a storage depot for oxygen. Myofibrils: each muscle cell consists of parallel myofibrils. Sarcomeres: extend from z disc to z disc; this muscle type is called (cid:498)striated muscle(cid:499). Epimysium: wrapped around all of the fascicles. Actin: the thin filaments, across i band and partly into the a band. Myosin: thick filaments, entire width of a band. Z disc: anchors the thin filaments & connects all myofibrils of a cell. Stabilizing site where everything is being held together. H zone: no thin filaments here! (relaxed muscle) M line: fine strands connecting adjacent thick filaments. Consists of a tail with 2 glogular heads. 2 heavy chains and 4 light chains. On the head region there is a binding site for atp.