ANP 1105 Lecture 3: Anatomy-Topic 2-2- word.docx

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Frank Christinck

Document Summary

2. 3. 1 describe the microscopic structure of skeletal muscle fibers and explain the cellular mechanisms of excitation-contraction (pp. 2. 3. 3 describe the contractile properties of skeletal muscle (motor unit, isotonic & isometric contractions, spatial & temporal summation, etc. ) (pp. 2. 3. 4 associate various muscle types with their metabolism and their speed of contraction and rate of fatigue (pp. 2. 3. 5 compare the properties of smooth muscle with those of skeletal muscle (pp. 2. 3. 1. 1 in table form, compare and contrast skeletal, smooth and cardiac muscle. Common features of muscle cells elongated cells = muscle fibers; terminology: myo-, sarco- (imply muscle: muscle contraction depends on actin & myosin myofilaments. 2. 3. 1. 2 list & briefly describe 4 muscle functions as well as 4 functional characteristics of muscle. 2. 3. 1. 3 describe the anatomy of a skeletal muscle cell; define sarcolemma, sarcoplasm, myoglobin, myofibril, sarcoplasmic reticulum, t-tubule, actin, myosin, a & i bands, a disc, h zone, m line. Myofibrils each muscle fiber (cell) consists of parallel myofibrils.