Advanced BiologyAdvanced Biology

Chapter 10Chapter 10

NECK MUSCLESNECK MUSCLES

AASternocleidomastoidSternocleidomastoidFlexes headFlexes head

NECK MUSCLESNECK MUSCLES

BBTrapeziusTrapeziusStabilizes, raises, Stabilizes, raises, retracts and rotates retracts and rotates scapulascapula

NECK MUSCLESNECK MUSCLES

NNOccipitalisOccipitalisPulls scalp posteriorlyPulls scalp posteriorly

SHOULDER MUSCLESSHOULDER MUSCLES

CCDeltoidDeltoidArm abductionArm abduction

SHOULDER MUSCLESSHOULDER MUSCLES

OOInfrapinatusInfrapinatusRotator Cuff Muscle; Helps Rotator Cuff Muscle; Helps hold head of humerus in hold head of humerus in glenoid cavity. Rotates glenoid cavity. Rotates humerus laterallyhumerus laterally

SHOULDER MUSCLESSHOULDER MUSCLES

PPTeres MajorTeres MajorExtends, medially Extends, medially rotates and adducts rotates and adducts humerushumerus

BACK MUSCLEBACK MUSCLE

DDLatissimus DorsiLatissimus DorsiPrime mover of arm Prime mover of arm extension. Powerful arm extension. Powerful arm adductor.adductor.

HIP MUSCLESHIP MUSCLES

EEGluteus MediusGluteus MediusAbducts and medially Abducts and medially rotates thigh – walkingrotates thigh – walking

HIP MUSCLESHIP MUSCLES

FFGluteus MaximusGluteus MaximusMajor extensor of thighMajor extensor of thigh

THIGH MUSCLESTHIGH MUSCLES

GGBiceps FemorisBiceps FemorisExtends thigh, flexes Extends thigh, flexes kneeknee

THIGH MUSCLESTHIGH MUSCLES

HHSemitendinosusSemitendinosusExtends thigh at hip; Extends thigh at hip; flexes knee; medially flexes knee; medially rotates legrotates leg

THIGH MUSCLESTHIGH MUSCLES

IISemimembranosusSemimembranosusDeep to semitendinosus; Deep to semitendinosus; extends thigh, flexes extends thigh, flexes knee, medially rotates legknee, medially rotates leg

ARM MUSCLESARM MUSCLES

JJTriceps BrachiiTriceps BrachiiPowerful forearm Powerful forearm extenderextender

FOREARM MUSCLESFOREARM MUSCLES

QQExtensor Carpi Radialis Extensor Carpi Radialis longuslongus

Extends and abducts Extends and abducts wristwrist

LEG MUSCLESLEG MUSCLES

KKGastrocnemiusGastrocnemiusPlantar flexes foot when Plantar flexes foot when knee is extended, weak knee is extended, weak flexor of kneeflexor of knee

LEG MUSCLESLEG MUSCLES

LLSoleusSoleusPlantar flexes ankle. Plantar flexes ankle. Aids in walkingAids in walking

LEG MUSCLESLEG MUSCLES

MMCalcanealCalcanealAttachment of Attachment of GastrocnemiusGastrocnemius