1.04 Remember the structures of the muscular system
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1.04 Remember 1.04 Remember the structures the structures of the of the muscular muscular system system
description
1.04 Remember the structures of the muscular system. Essential Question. What are the structures of the muscular system?. The Muscular System. Comprises nearly half our weight. Over 650 muscles. Each muscle is made up of hundreds or thousands of muscle fibers. - PowerPoint PPT Presentation
Transcript of 1.04 Remember the structures of the muscular system
1.04 Remember 1.04 Remember the structures the structures
of the of the muscular systemmuscular system
1.04 Remember the structures of the muscular system
Essential QuestionEssential Question
• What are the structures of the muscular system?
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1.04 Remember the structures of the muscular system
The Muscular SystemThe Muscular System
• Comprises nearly half our weight.• Over 650 muscles.• Each muscle is made up of hundreds or
thousands of muscle fibers.
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1.04 Remember the structures of the muscular system
The Muscular SystemThe Muscular System::Muscle FibersMuscle Fibers
• Bundles of threadlike structures called myofibrils– Composed of:
• Myosin• Actin
– Form overlapping pattern called sarcomere
muscle muscle fiber sarcolemma sarcomere functional unit of muscle movement
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
MusclesMusclesSkeletal
Smooth
Cardiac
Sphincter
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Connective tissueConnective tissueTendons
Fascia
1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of muscleTypes of muscleSkeletal
Smooth
Cardiac
Sphincter
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of MuscleTypes of Muscle
Skeletal musclesSkeletal musclesAttached to boneAttached to bone
Striated (striped) appearanceStriated (striped) appearance
VoluntaryVoluntary
Multinucleated muscle cell bundlesMultinucleated muscle cell bundles
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of MuscleTypes of Muscle
Smooth musclesSmooth musclesAlso known as visceral muscles
Involuntary
Located in walls of digestive
system, uterus & blood vessels
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of MuscleTypes of Muscle
Cardiac muscleCardiac muscleFound only in the heartStriated, branchedInvoluntaryCells are fused- when one contracts, they all contract, creating the heartbeat
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of MuscleTypes of MuscleSphincter musclesSphincter musclesAlso called dilator musclesAlso called dilator musclesSpecial, circular musclesSpecial, circular musclesLocated in the Located in the
digestive systemdigestive system urinary systemurinary system
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
Types of MuscleTypes of Muscle Skeletal
Smooth
Cardiac
Sphincter
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1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
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Types of Connective tissueTypes of Connective tissue Tendons
Fascia
1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
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Connective tissueConnective tissue Tendons
dense bands that connect skeletal muscle
to the bone
1.04 Remember the structures of the muscular system
Structures of the muscular systemStructures of the muscular system
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Connective tissueConnective tissue FasciaFasciaFibrous connective
tissue sheets that wrap around muscle bundles
1.04 Remember the structures of the muscular system
How do skeletal muscles get How do skeletal muscles get their names?their names?
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• However, However, • not all muscles are named by the above methods!not all muscles are named by the above methods!
1.04 Remember the structures of the muscular system
Head & Neck MusclesHead & Neck Muscles
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1.04 Remember the structures of the muscular system
Torso/TrunkTorso/Trunk(anterior)
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1.04 Remember the structures of the muscular system
Torso/TrunkTorso/Trunk(anterior)
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1.04 Remember the structures of the muscular system
Torso/TrunkTorso/Trunk(posterior)
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1.04 Remember the structures of the muscular system
Upper extremitiesUpper extremities
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1.04 Remember the structures of the muscular system
Lower extremitiesLower extremities
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1.04 Remember the structures of the muscular system
The muscular system reviewThe muscular system reviewAnterior viewAnterior view
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1.04 Remember the structures of the muscular system
The muscular system reviewThe muscular system reviewPosterior viewPosterior view
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1.04 Remember the structures of the muscular system
1.04 Remember the structures of the 1.04 Remember the structures of the
muscular systemmuscular system
Essential QuestionEssential Question• What are the structures of the muscular
system?
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