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Hand Muscles

QuestionAnswer
Abductor Pollicus Longus ABD & Extends Thumb at MCP Joint
Extensor Pollicus Brevis Extends Thumb at CMC & MP Joint; ABD CMC
Extensor Pollicus Longus Extends the IP joint; extends and adducts the thumb MP and CMC joints
Extensor Digiti Minimi Extends the little finger; allows for isolated extension of the little finger
Extensor Indicis extends the index finger and permits isolated extension of the index finger
Flexor Pollicus Longus Flexes the IP joint of the thumb
Flexor Digitorum Superficialis Flexion of middle phalanges of 4 fingers at PIP joint
Flexor Digitorum Profundous flexion of distal phalanges at the DIP joint
Dorsal Interossei Spreads fingers while extending; ABD index, middle and ring finger
Palmar Interossei Draws fingers together while flexing; ADD thumb, index, ring and little finger
Lumbricals Flexes digits at the MP joints, extends PIP & DIP simultaneously; extends PIP with MP joints in extension
Abductor Pollicus Brevis ABD thumb; flexes thumb at MP & CMC joint
Opponens Pollicus Flexes thumb at MP joint; bends thumb medially across palm and rotates thumb medially (opposition)
Flexor Pollicis Brevis Flexes proximal Phalanx of the thumb Flexes thumb MP and CMC joints
Adductor Pollicis Adducts the thumb to the palm
Abductor Digiti Minimi Abducts little finger;Flexes MP joint of little finger
Flexor Digiti Minimi Flexes little finger at MP joint
Opponens Digiti Minimi Draws 5th metacarpal Anteriorly and rotates laterally for Opposition with the thumb
Flexor Pollicis Brevis Wrinkles skin on ulnar side of the palm
Brachioradialis Flexion of elbow in neutral position
Supinator supination of forearm
Pronator Teres Pronation of forearm; assists in flexion of elbow
Pronator Quadratus Pronates forearm
Flexor Carpi Radialis Flexion; ABD of wrist
Flexor Carpi Ulnaris Flexion; ADD of wrist
Palmaris Longus Assists in flexion of the wrist
Extensor Carpi Radialis Longus extenstion; ABD of wrist
Extensor Carpi Radialis Brevis extenstion
Extensor Carpi Ulnaris Extenstion; ADD of wrist
Created by: collinsc6
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