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Chapter 5 Muscular System. Muscle Attachments. Origin Insertion Reversal of muscle action . Categories of Muscle Names. Location Shape Action Number of heads or divisions Attachments = origin/insertion Direction of the fibers Size of the muscle. Muscle Fiber Arrangement. Parallel
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Muscle Attachments • Origin • Insertion • Reversal of muscle action
Categories of Muscle Names • Location • Shape • Action • Number of heads or divisions • Attachments = origin/insertion • Direction of the fibers • Size of the muscle
Muscle Fiber Arrangement • Parallel • Strap • Fusiform • Rhomboidal • Triangular • Oblique • Unipennate • Bipennate • Mulipennate
Functional Characteristics of Muscle Tissue • Normal resting length • Irritability • Contractibility • Extensibility • Elasticity
Length-Tension Relationship in Muscle Tissue • Tension • Tone • Excursion • Active insufficiency • Passive insufficiency • Stretching • Tenodesis
Types of Contraction • Isometric (ISOM) • Isotonic (ISOT) • Concentric • Eccentric • Gravity-eliminated exercise • Isokinetic (ISOK)
Roles of Muscles • Agonist • Antagonist • Stabilizer • Neutralizer
Angle of Pull • Most muscles have a diagonal line of pull • The resultant force of a vertical force and a horizontal force
Kinetic Chains • Closed kinetic chain • Open kinetic chain