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.A&P Flix: Flexor Digitorum
Superficialis
