ANP1105- Final Exam Guide - Comprehensive Notes for the exam ( 231 pages long!)

• School: University of Ottawa
• Department: Anatomy and Physiology
• Course: ANP 1105
• Professor: Joanne Savory

Document Summary

Elongated cells: muscle fibers; terminology: myo-, sacro- muscle contraction depends on the actin and myosin myofilaments. Pacemaker sets rate of contraction; neural input can increase rate. Longest muscle fibers: 5-6 nuclei within the muscle fiber, 5-6 myoblasts fuse together. Can contract rapidly; tires easily and must rest. Slow, sustained contractions: gi tract -> peristalsis. Generate movement: locomotion, manipulation, blood flow and pressure, respiration, propelling food, urine, etc. Joint stabilization: shoulders, knees when moving parts of skeleton. Generation of heat: maintenance of body temperature (especially skeletal muscle) Excitability: ability to receive and respond to a stimulus: stimulus: usually a chemical (nt, hormone, response: p along sarcolemma and muscle contraction. Contractility: ability to shorten forcibly when adequately stimulated. Elasticity: ability to resume resting length after being stretched. Long, cylindrical cell with many oval nuclei (cell membrane is the sarcolemma) huge cells (diameters of 10-100um and lengths in cm) Sarcoplasm contains lots of glycogen and myoglobin- lots of myofibrils, extensive sarcoplasmic reticulum, t-tubules.