Forearms Wrists Hands MusclesForearms wrists hands grouped together--These body parts contain many muscles. They are used frequently at home and work.
We use them to do many things such as cooking, eating, keyboarding, playing sports, and dozens of other activities of daily living. We will look at the following forearms wrists hands muscles here:
Flexor Carpi Radialis Flexor Carpi Ulnaris Palmaris Longus Flexor Digitorum Superficialis Flexor Digitorum Profundus Extensor Carpi Radialis Longus and Brevis Extensor Carpi Ulnaris Extensor Digitorum Extensor Digiti Minimi Extensor Indicis Extensor Pollicis Longus and Brevis Flexor Pollicis Longus and Brevis Opponens Pollicis Abductor Pollicis Longus and Brevis Flexor Digiti Minimi Brevis Abductor Digiti Minimi Opponens Digiti Minimi Below are the muscle study aids for massage therapy students.
Flexor Carpi RadialisOrigin is medial epicondyle of humerus.Insertion is bases of metacarpals 2-3. Actions--abducts wrist, flexes wrist.
Flexor Carpi UlnarisOrigin is medial epicondyle of humerus.Insertions are hamate, pisiform, and base of metacarpal 5. Actions--adducts wrist and flexes wrist.
Palmaris LongusOrigin is medial epicondyle of humerus.Insertions are palmar aponeurosis and transverse carpal ligament. Actions--cups palm of the hand and flexes wrist.
Flexor Digitorum SuperficialisOrigins are coronoid process of ulna, medial epicondyle of humerus, and proximal radial shaft.Insertion is middle phalanges of fingers 2-5. Actions--flexes fingers at PIP and MP joints and flexes wrist.
Flexor Digitorum ProfundusOrigin is anterior proximal 3/4 of ulnar shaft.Insertion is distal phalanges of fingers 2-5. Action--flexes fingers at DIP, PIP, MP joints.
Extensor Carpi Radialis Longus and BrevisOrigins are lateral epicondyle of humerus (brevis) and supracondylar ridge of humerus (longus).Insertions are base of metacarpal 3(brevis) and base of metacarpal 2(longus). Actions abducts wrist and extends wrist.
Extensor Carpi UlnarisOrigin is lateral epicondyle of humerus.Insertion is base of metacarpal 5. Actions--adducts wrist and extends wrist.
Extensor DigitorumOrigin is lateral epicondyle of humerus.Insertion is middle phalanges of 4 fingers. Actions--extends fingers at DIP, PIP, and MP joints and extends wrist.
Extensor Digiti MinimiOrigin is lateral epicondyle of humerus.Insertion is proximal phalanx of 5th finger. Action--extends 5th finger.
Extensor IndicisOrigin is posterior ulnar shaft.Insertion is distal phalanx of index finger. Action--extends index finger.
Extensor Policis Longus and BrevisOrigins are posterior ulnar shaft, posterior radial shaft middle region, and interosseous membrane for longus. Posterior radial shaft distal region for brevis.Insertions are distal phalanx of thumb (longus) and proximal phalanx of thumb (brevis). Action--extends thumb.
Flexor Pollicis Longus and BrevisOrigins are anterior radial shaft middle, anterior ulnar shaft middle, and interosseous membrane for longus. Trapezium and transverse carpal ligament for brevis.Insertions are distal phalanx of thumb for longus and proximal phalanx of thumb for brevis. Action--flexes thumb.
Opponens PollicisOrigins are trapezium and transverse carpal ligament.Insertion is proximal phalanx of thumb. Actions--adducts thumb and flexes thumb.
Abductor Pollicis Longus and BrevisOrigins are posterior ulnar shaft middle and posterior radial shaft middle for longus. Trapezium, scaphoid, and transverse carpal ligament for brevis.Insertions are base of metacarpal 1 for longus and proximal phalanx of thumb for brevis. Action--abducts thumb.
Flexor Digiti Minimi BrevisOrigin is transverse carpal ligament.Insertion is proximal phalanx of 5th finger. Action--flexion of 5th finger.
Abductor Digiti MinimiOrigin is transverse carpal ligament.Insertion is proximal phalanx of 5th finger. Action--abduction of 5th finger.
Opponens Digiti MinimiOrigin is transverse carpal ligament.Insertion is metacarpal 5. Action--adducts 5th finger. Notice how the forearms wrists hands muscles work together while you are typing or stirring or combing your hair, for example. For massage therapists, the group of muscles in the forearms wrists hands are worked the most and must be well-taken care of so they do not become damaged. Self-care for the massage therapist is very important.
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