Chapter 5 Muscular System

Copyright © 2011. F.A. Davis Company

Clinical Kinesiology and Anatomy, 5th EditionClinical Kinesiology and Anatomy, 5th Edition

Chapter 5Chapter 5Muscular SystemMuscular System



Muscle AttachmentsMuscle Attachments Origin Insertion Reversal of muscle action



Categories of Muscle NamesCategories of Muscle Names Location Shape Action Number of heads or divisions Attachments = origin/insertion Direction of the fibers Size of the muscle



Muscle Fiber ArrangementMuscle Fiber Arrangement Parallel

Strap Fusiform Rhomboidal Triangular

Oblique Unipennate Bipennate Mulipennate





Functional Characteristics Functional Characteristics of Muscle Tissueof Muscle Tissue

Normal resting length Irritability Contractibility Extensibility Elasticity



Length-Tension Relationship Length-Tension Relationship in Muscle Tissuein Muscle Tissue

Tension Tone Excursion Active insufficiency Passive insufficiency Stretching Tenodesis



Types of ContractionTypes of Contraction Isometric (ISOM) Isotonic (ISOT)

Concentric Eccentric Gravity-eliminated exercise

Isokinetic (ISOK)



Roles of MusclesRoles of Muscles Agonist Antagonist Stabilizer Neutralizer



Angle of PullAngle of Pull Most muscles have a diagonal line of pull

The resultant force of a vertical force and a horizontal force



Kinetic ChainsKinetic Chains Closed kinetic chain Open kinetic chain

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Chapter 5 Muscular System