1. Chapter 6

2. Applied Learning OutcomesUse the terminology associated with themusculature systemLearn about the following: Different types of muscle cells Muscle tissue development Gross and fine muscle structure Gross muscle function Muscle cell physiology Muscle types and actions Muscle development and growthUnderstand the aging and pathology of themusculatureChapter 6 The Muscular System 3. OverviewMuscle cells change their shapeby shortening along one or moreplanes; this is also calledcontraction.Over half the bodys mass iscomposed of muscle tissue, andover 90% of this muscle tissue isinvolved in skeletal movement.Chapter 6 The Muscular System 4. MuscleThree types of muscle are found in the human body: Smooth muscle Cardiac muscle Skeletal muscleChapter 6 The Muscular System 5. MusculatureMost muscles areformed of musclecells laid out in oneof two patterns:parallel or pinnateThese two patternscan be woven intoa variety of grossmuscle shapesChapter 6 The Muscular System 6. Musculature ChartsReview humanmusculature,anterior viewChapter 6 The Muscular System 7. MusculatureChartsReview humanmusculature,posterior view Chapter 6 The Muscular System 8. Wellness and Illness over the Life Span Some aging of the musculature isdue to wear and tear Overuse of muscles can causedamage, which can, in turn,produce muscle pathology Some muscle diseases aregenetic or developmental Most disorders of the muscularsystem are due to interactions withthe skeletal and nervous systemsChapter 6 The Muscular System 9. SummaryMuscles cells are contractile and excitable.Contractile nature allows for movement; excitablenature permits voluntary or involuntary control.Skeletal muscle is the most common type of muscle.They work by shortening, lengthening, or remainingstationary.Muscle needs regular activity and proper nutrition toretain its size and function.Some aging of the musculature is due to wear andtear; diet and changes in hormone production canaffect muscle aging. A variety of genetic diseases canalso cause loss of muscle function. Chapter 6 The Muscular System