ANP 1105 Chapter Notes -Myofibril, Endomysium, Glycolysis

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

Document Summary

Pacemaker sets rate of contraction; neural input can increase rate. Can contract rapidly; tires easily & must rest. Functional characteristics of muscle: excitability (irritability): ability to receive and respond to a stimulus. (usually chemical), contractility: ability to shorten forcibly when adequately stimulated, extensibility: ability to be stretched or extended, elasticity: ability to resume resting length after being stretched, sarcolemma: plasma membrane of muscle. Perimysium: when we bundle parallel muscle cells(fascicle) the muscle cell. wrapping around it: sarcomeres extend from one z disc to the next z; sarcomeres give this muscle type the name striated muscles , myofilaments: Myosin heads contain atpase, heads have enzyme activity, the heads can hydrolyze atp: perimysium: connective tissue surrounding a fascicle, sarcomere: contractile unit of muscle, fiber: a muscle cell, endomysium: thin connective tissue investing each muscle cell, sarcolemma: plasma membrane of the muscle cell, tendon: cordlike extension of ct beyond muscle attaches it to bone, fascicle: a discrete bundle of muscle cells.