Embed Size (px)
Citation preview
MUSCLES AND MUSCLE TISSUES
Chapter 9
Functions of Muscle Tissue
Movement
Heat production
Maintenance of posture
Stabilize joints
Functional Characteristics
Excitability
Contractibility
Extensibility
Elasticity
Types of Muscle Tissue
Types of Muscle Tissue
Types of Muscle Tissue
Types of Muscle Tissue
Gross Anatomy ofSkeletal Muscle
Gross Anatomy ofSkeletal Muscle
Gross Anatomy ofSkeletal Muscle
Gross Anatomy ofSkeletal Muscle
Highly vascularized
Highly innervated
Muscle Attachments
Insertion versus origin
Direct attachment
Indirect attachment (tendons and aponeurosis)
Microscopic Anatomy
Microscopic Anatomy
Microscopic Anatomy
Neuromuscular Junction
Generating an Action Potential
Generating an Action Potential
Sliding Filament Model
Sliding Filament Model
Sliding Filament Model
Sliding Filament Model
Motor Units
Typical Myogram
Frequency of Stimulation
Treppe
Muscle Tone
Muscle Metabolism
Muscle Fatigue
THE MUSCULAR THE MUSCULAR SYSTEMSYSTEM
CHAPTER 10CHAPTER 10
Interactions of Interactions of Skeletal MuscleSkeletal Muscle
Agonist=prime moverAgonist=prime mover
Antagonist=opposes the agonistAntagonist=opposes the agonist
Synergist=helpersSynergist=helpers
Fixators=immobilizersFixators=immobilizers
Naming Skeletal MusclesNaming Skeletal Muscles
LocationLocation ShapeShape Relative sizeRelative size DirectionDirection Number of originsNumber of origins Location of attachmentsLocation of attachments ActionAction
Fascicle ArrangementFascicle Arrangement
Muscle MechanicsMuscle Mechanics
Lever SystemsLever Systems
What is a Lever?What is a Lever?
A A leverlever is a rigid bar that moves on a is a rigid bar that moves on a fixed point, or fixed point, or fulcrumfulcrum, when a force , when a force is applied to it. The applied force, or is applied to it. The applied force, or efforteffort, is used to move a resistance, , is used to move a resistance, or or loadload. .
Mechanical AdvantageMechanical Advantage
Mechanical DisadvantageMechanical Disadvantage
Three Classes of LeversThree Classes of Levers
Three Classes of LeversThree Classes of Levers
Three Classes of LeversThree Classes of Levers
