Muscle Shapes & Contractions PDF
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Summary
This document provides an overview of muscle shapes and contractions. It describes the different types of muscle tissue, including skeletal, cardiac, and smooth muscles, and how they function. The document also explains how muscle fibers are arranged and how muscles contract.
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Muschar system A Functions Movement - body Maintain - - Stabilization Joint Heat - movement generation * Muscle tissue - Made 3 types - - - of of contractive muscle skeletal-connect cardiac-walls tissues to (muscle tibes) cells : bones of heart smooth-walls of blood H...
Muschar system A Functions Movement - body Maintain - - Stabilization Joint Heat - movement generation * Muscle tissue - Made 3 types - - - of of contractive muscle skeletal-connect cardiac-walls tissues to (muscle tibes) cells : bones of heart smooth-walls of blood Hallow organs ressers and A Skeletal helps - cardiac Contract in - to - * movement/ stability voluntary - * with rhythmic way to Pump blood body . Involuntary muscle smooth - Blood I vessels contract ↓ - control Hollow L L blood flow organs peristaltic contracts Moves one - walls contents of direction involuntary organs in * Arrangement - -> * muscles Skeletal Fascicles Types of · in of fascicles - - consists arranged fascicle in of muscles fascicles different arrangement patterns : Parallel Strap-like * * · fusiform convergent * * origin of muscle Fasiciles # enden converge of toward the insertion * BiPennate - feature Oblithe fibers - en beth sides of tendo * multipennale - - Fascicles Attaching in to different a branched directions central tenden * circular - - * surrend of constriction work muscles desired * body can't muscle * Muscles opposite opening to better during to contraction bring out movement Muscle * Ander openings the reverse must unde with opposite sides of joint movement it action actions lie on Produces - transverse * (T-tubules ) tubules project Sakolemma from to center of muschs filaments * long Sarcoplasm A Thick , called contain thin filaments myosin fill myofibrils acting filaments (arranged into Sacromeres ( - thich filaments (myosin) A tail * each I with head head has ATP , activ binding sizes - thin (acin) filaments * Tropomyesin : contraction by at musin , Site to blocker , prevents disabling attachment action
