2015 Pearson Education, Inc.Muscles That Move the Arm

2015 Pearson Education, Inc.A&P Flix: Latissimus Dorsi

2015 Pearson Education, Inc.A&P Flix: Pectoralis Major

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Forearm and HandMost of these muscles originate on the humerus and insert on the forearm and wristExceptions include:Long head of triceps brachii: originates on the scapula and inserts on the olecranonLong head of biceps brachii: originates on the scapula and inserts of the radial tuberosity of the radius

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Forearm and HandAnterior viewMuscles that move the forearmBiceps brachiiFlexes at the elbow and shoulderBrachialisFlexes at the elbowBrachioradialisFlexes at the elbow

2015 Pearson Education, Inc.

Figure 11.8b Muscles That Move the Forearm and Hand, Part I

Coracoid processof scapulaHumerusCoracobrachialisTriceps brachii,long headTriceps brachii,medial headPronator teresMedial epicondyleof humerusFLEXORS ATTHE ELBOWBiceps brachii,long headBiceps brachii,short headBrachialisBrachioradialisFLEXORS AT THEWRISTFlexor carpi radialisPalmaris longusFlexor carpi ulnarisFlexor digitorum superficialisPronator quadratusPalmar carpal ligamentFlexor retinaculumMuscles ThatMove the HandMuscles That Move the ForearmSuperficial muscles of the rightupper limb, anterior viewb

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Forearm and HandAnterior viewMuscles that move the handFlexor carpi radialisFlexes and abducts the wristPalmaris longusFlexes at the wristFlexor carpi ulnarisFlexes and adducts the wrist

2015 Pearson Education, Inc.

Figure 11.8b Muscles That Move the Forearm and Hand, Part I

Coracoid processof scapulaHumerusCoracobrachialisTriceps brachii,long headTriceps brachii,medial headPronator teresMedial epicondyleof humerusFLEXORS ATTHE ELBOWBiceps brachii,long headBiceps brachii,short headBrachialisBrachioradialisFLEXORS AT THEWRISTFlexor carpi radialisPalmaris longusFlexor carpi ulnarisFlexor digitorum superficialisPronator quadratusPalmar carpal ligamentFlexor retinaculumMuscles ThatMove the HandMuscles That Move the ForearmSuperficial muscles of the rightupper limb, anterior viewb

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Forearm and HandPosterior viewMuscles that move the forearmAnconeusExtension at the elbowTriceps brachiiLateral head: extension at the elbowLong head: extension at the elbow and adduction at the shoulderMedial head: extension at the elbow

2015 Pearson Education, Inc.

Figure 11.10b Muscles That Move the Forearm and Hand, Part II

Infraglenoidtubercle ofscapulaOlecranon of ulnaBrachioradialisEXTENSORS AT THEELBOWTriceps brachii,lateral headTriceps brachii, long headAnconeusEXTENSORS AT THEWRISTExtensor carpiradialis longusExtensor carpiulnarisExtensor carpiradialis brevisAbductor pollicislongusExtensor pollicisbrevisFlexor carpiulnarisExtensordigitorumUlnaRadiusExtensorretinaculumA diagrammatic view of adissection of the superficialmusclesbMuscles ThatMove the HandMuscles ThatMove the Forearm

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Forearm and HandPosterior viewMuscles that move the handExtensor carpi radialis longusExtension and abduction at wristExtensor carpi ulnarisExtension and adduction at wristExtensor carpi radialis brevisExtension and abduction at wrist

2015 Pearson Education, Inc.

Figure 11.10b Muscles That Move the Forearm and Hand, Part II

Infraglenoidtubercle ofscapulaOlecranon of ulnaBrachioradialisEXTENSORS AT THEELBOWTriceps brachii,lateral headTriceps brachii, long headAnconeusEXTENSORS AT THEWRISTExtensor carpiradialis longusExtensor carpiulnarisExtensor carpiradialis brevisAbductor pollicislongusExtensor pollicisbrevisFlexor carpiulnarisExtensordigitorumUlnaRadiusExtensorretinaculumA diagrammatic view of adissection of the superficialmusclesbMuscles ThatMove the HandMuscles ThatMove the Forearm

2015 Pearson Education, Inc.Muscles That Move the Forearm and Hand

2015 Pearson Education, Inc.A&P Flix: Movement of the Elbow Joint

2015 Pearson Education, Inc.A&P Flix: Muscles of the Elbow Joint (a)

2015 Pearson Education, Inc.A&P Flix: Muscles of the Elbow Joint (b)

2015 Pearson Education, Inc.A&P Flix: Muscles of the Elbow Joint (c)

2015 Pearson Education, Inc.A&P Flix: Biceps Brachii

2015 Pearson Education, Inc.A&P Flix: Triceps Brachii

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Hand and FingersExtrinsic muscles of the handRelatively large muscles that perform flexion and extension at the joints of the fingersProvide strength and crude control of the hand and fingersThese muscles are found mostly in the forearm

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsMuscles That Move the Hand and FingersIntrinsic muscles of the handSmaller muscles that provide fine control of handResponsible for flexion and extension, and abduction and adduction of the fingers at the metacarpophalangeal jointsResponsible for opposition and reposition of the thumbThese muscles are found mostly in the palm or the dorsum of the hand

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsExtrinsic Muscles of the HandAnterior viewFlexor digitorum superficialisFlexion at the wrist and some digitsFlexor digitorum profundusFlexion at the wrist and some digitsFlexor pollicis longusFlexion of the thumb

2015 Pearson Education, Inc.

Figure 11.11b Extrinsic Muscles That Move the Hands and Fingers

Median nervePronator teres (cut)Brachial arteryRadiusUlnaFlexor carpi ulnaris(retracted)Tendon ofbicepsbrachiiBrachioradialis(retracted)Flexor digitorum superficialisFlexor pollicis longusFlexor digitorum profundusMuscles That Flex theFingers and ThumbMEDIALLATERALAnterior view of the middle layer of muscles. The flexorcarpi radialis and palmaris longus muscles have beenremoved.b

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsExtrinsic Muscles of the Hand (continued)Posterior viewAbductor pollicis longusAbduction of thumbExtensor digitorumExtension of fingers and wristExtensor pollicis brevisExtension of thumb, abducts the wristExtensor digiti minimiExtension of little finger, extension of wrist

2015 Pearson Education, Inc.

Figure 11.11e Extrinsic Muscles That Move the Hands and Fingers

AnconeusExtensordigitorumExtensordigiti minimiMuscles ThatExtend the FingersAbductorpollicis longusExtensorpollicis brevisTendon ofextensorpollicis longusMEDIALLATERALPosterior view of the middle layer of muscles.e

2015 Pearson Education, Inc.

Figure 11.11f Extrinsic Muscles That Move the Hands and Fingers

AnconeusSupinatorMuscles ThatMove the ThumbAbductorpollicis longusExtensorpollicis longusExtensorpollicis brevisRadiusExtensorindicisUlnaTendon ofextensordigiti minimi(cut)Tendons ofextensordigitorum(cut)LATERALMEDIALPosterior view of the deep layer of muscles.See also Figures 7.7, 7.8, and 11.9.f

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsIntrinsic Muscles of the HandAdductor pollicisAdducts the thumbFlexor pollicis brevisFlexes and adducts thumbAbductor pollicis brevisAbducts the thumb

2015 Pearson Education, Inc.

Figure 11.12c Intrinsic Muscles, Tendons, and Ligaments of the Hand, Part I

Tendon of flexordigitorum profundusTendon of flexordigitorum superficialisTendons offlexor digitorumTendon of flexorpollicis longusIntrinsic Musclesof the ThumbAdductor pollicisFlexor pollicisbrevisOpponens pollicisAbductor pollicisbrevisTendon of palmaris longusTendon of flexor carpi radialisSynovial sheathsIntrinsic Musclesof the HandLumbricalsPalmar interosseusFirst dorsalinterosseusAbductordigiti minimiFlexor digitiminimi brevisOpponensdigiti minimiPalmaris brevis(cut)Flexor retinaculumTendon of flexor carpi ulnarisAnterior (palmar) viewc

2015 Pearson Education, Inc.Muscles of the Pectoral Girdle and Upper LimbsIntrinsic Muscles of the HandAbductor digiti minimiAbducts little finger

2015 Pearson Education, Inc.

Figure 11.12c Intrinsic Muscles, Tendons, and Ligaments of the Hand, Part I

Tendon of flexordigitorum profundusTendon of flexordigitorum superficialisTendons offlexor digitorumTendon of flexorpollicis longusIntrinsic Musclesof the ThumbAdductor pollicisFlexor pollicisbrevisOpponens pollicisAbductor pollicisbrevisTendon of palmaris longusTendon of flexor carpi radialisSynovial sheathsIntrinsic Musclesof the HandLumbricalsPalmar interosseusFirst dorsalinterosseusAbductordigiti minimiFlexor digitiminimi brevisOpponensdigiti minimiPalmaris brevis(cut)Flexor retinaculumTendon of flexor carpi ulnarisAnterior (palmar) viewc