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posterior view click to hear : posterior view

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gastrocnemius slender biceps of thigh semimembranous semitendinous greatest gluteal short radial extensor of wrist ulnar flexor of wrist brachioradialis triceps of arm broadest of back infraspinous splenius muscle of head short peroneal plantar great adductor lateral great external oblique ulnar extensor of wrist common extensor of fingers anconeus long radial extensor of wrist larger round smaller round trapezius complexus occipital

gastrocnemius click to hear : gastrocnemius

Large thick muscle forming the curve of the calf and allowing the foot to extend; it also helps the knee to extend.

slender click to hear : slender

Muscle enabling the thigh to draw near the median axis of the body, and the leg to flex on the thigh and to rotate inwardly (toward the median axis).

biceps of thigh click to hear : biceps of thigh

Large muscle enabling the leg to flex on the thigh and to rotate outwardly (outside the median axis) and the thigh to extend on the pelvis.

semimembranous click to hear : semimembranous

Flat muscle enabling the thigh to extend on the pelvis, the knee to flex, and the thigh and the leg to rotate inwardly (toward the median axis).

semitendinous click to hear : semitendinous

Long muscle enabling the thigh to extend on the pelvis, the knee to flex, and the thigh and the leg to rotate inwardly (toward the median axis).

greatest gluteal click to hear : greatest gluteal

Thick muscle enabling the hip to extend and to rotate outwardly (outside the median axis); it also allows the trunk to return to a vertical position.

short radial extensor of wrist click to hear : short radial extensor of wrist

Muscle enabling the hand to extend and to draw away from the median axis of the body.

ulnar flexor of wrist click to hear : ulnar flexor of wrist

Muscle enabling the hand to flex and to draw near the median axis of the body.

brachioradialis click to hear : brachioradialis

Flat muscle primarily enabling the forearm to flex; it also helps it to rotate outwardly, bringing the palm of the hand toward the front.

triceps of arm click to hear : triceps of arm

Powerful muscle enabling the forearm to extend on the arm; it contracts whereas the biceps relaxes.

broadest of back click to hear : broadest of back

Large flat muscle especially enabling the arm to draw near the median axis of the body, to extend and to rotate inwardly.

infraspinous click to hear : infraspinous

Flat triangular muscle enabling the arm to rotate outwardly (outside the median axis); it also stabilizes the shoulder joint.

splenius muscle of head click to hear : splenius muscle of head

Muscle enabling the head to tilt sideways and to rotate; the simultaneous action of the two splenii allows the head to extend.

short peroneal click to hear : short peroneal

Muscle attached to the fibula enabling the foot to extend and to draw away from the median axis of the body.

plantar click to hear : plantar

Small muscle that, with the gastrocnemii, allows the knee to flex or the ankle to extend, depending on whether or not the foot is resting on the ground.

great adductor click to hear : great adductor

Powerful muscle enabling the thigh to draw near the median axis of the body, to rotate outwardly (outside the median axis), to flex and to extend.

lateral great click to hear : lateral great

Large outer thigh muscle mainly allowing the knee to extend; it also stabilizes the knee.

external oblique click to hear : external oblique

Large thin muscle enabling the trunk to flex and to rotate on the pelvis and the internal organs to compress; it also aids in expiration.

ulnar extensor of wrist click to hear : ulnar extensor of wrist

Muscle enabling the hand to extend and to draw near the median axis of the body.

common extensor of fingers click to hear : common extensor of fingers

Muscle enabling all the fingers, except the thumb, to extend; it also helps the hand to extend on the forearm.

anconeus click to hear : anconeus

Short muscle reinforcing the action of the triceps; it allows the forearm to extend on the arm and also stabilizes the elbow joint.

long radial extensor of wrist click to hear : long radial extensor of wrist

Muscle enabling the hand to extend and to draw away from the median axis of the body.

larger round click to hear : larger round

Muscle enabling the arm to draw near the median axis of the body and to rotate inwardly.

smaller round click to hear : smaller round

Muscle enabling the arm to rotate outwardly (outside the median axis); it also stabilizes the shoulder joint.

trapezius click to hear : trapezius

Large flat triangular muscle enabling many shoulder movements; it also helps to extend the head.

complexus click to hear : complexus

Muscle enabling the head to tilt sideways; the simultaneous action of the two complexi allows the head to extend.

occipital click to hear : occipital

Muscle pulling the scalp toward the back.