sistem otot muskular 1 (muscular system)
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Skeletal Muscle
Anatomy and Physiology IUnit 8The Muscular System
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The Skeletal Muscles
There are about 650 muscles in the
human body. They enable us to
move, maintain posture and generate
heat. In this section we will onlystudy a sample of the major muscles.
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Types of Musculo-Skeletal
Movement
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Flexion
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Extension
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Hyperextension
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Abduction, Adduction &
Circumduction
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Rotation
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Muscle Attachments
Origin
Insertion
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SternocleidomastoideusFlexes and Rotates Head
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MasseterElevate Mandible
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TemporalisElevate & Retract Mandible
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TrapeziusExtend Head, Adduct, Elevate or
Depress Scapula
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Latissimus DorsiExtend, Adduct & Rotate Arm Medially
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DeltoidAbduct, Flex & Extend Arm
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Pectoralis Major
Flexes, adducts & rotates arm medially
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Biceps BrachiiFlexes Elbow Joint
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Triceps BrachiiExtend Elbow Joint
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Rectus AbdominusFlexes Abdomen
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External ObliqueCompress Abdomen
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External IntercostalsElevate ribs
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Internal IntercostalsDepress ribs
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DiaphragmInspiration
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Forearm Muscles
Flexor carpiFlexes wrist
Extensor carpiExtends wrist
Flexor digitorumFlexes fingers
Extensor digitorumExtends fingers
PronatorPronates
SupinatorSupinates
Gl M i
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Gluteus MaximusExtends & Rotates
Thigh Laterally
R t F i
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Rectus Femoris
Flexes Thigh,Extends Lower Leg
G ili
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GracilisAdducts and Flexes Thigh
S t i
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Sartorius
Flexes Thigh, &
Rotates Thigh
Laterally
Bi F i
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Biceps Femoris
Extends Thigh &Flexes Lower Leg
G t i
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Gastrocnemius
Plantar Flexes Foot
& Flex Lower Leg
Tibi li A t i
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Tibialis AnteriorDorsiflexes and Inverts Foot
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Anterior
Posterior
http://c/Documents%20and%20Settings/oem/My%20Documents/My%20Pictures/musclesanterior.jpghttp://c/Documents%20and%20Settings/oem/My%20Documents/My%20Pictures/musclesposterior.jpghttp://c/Documents%20and%20Settings/oem/My%20Documents/My%20Pictures/musclesposterior.jpghttp://c/Documents%20and%20Settings/oem/My%20Documents/My%20Pictures/musclesanterior.jpg -
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