### Understanding Muscle Attachments and Functional Characteristics in the Muscular System ###
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Chapter 5 delves into the complexities of the muscular system, focusing on muscle attachments—origin and insertion—and the various categories that define muscle names based on location, shape, action, and fiber direction. It discusses the arrangement of muscle fibers, their functional characteristics like contractibility and irritability, and the length-tension relationship. Additionally, it covers different types of muscular contractions, including isometric and isotonic, while exploring the roles of muscles like agonists, antagonists, and stabilizers. The chapter also highlights kinetic chains in both open and closed systems. ###
### Understanding Muscle Attachments and Functional Characteristics in the Muscular System ###
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Presentation Transcript
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