Download Flashcards for forearm/hand/etc.

abductor digiti minimi
Muscle on the pinky side of the palm that helps to spread
fingers apart.
Action of muscle
*Abducts little finger
abductor pollicis longus (PAHL-ih-sis)
Found superficial to posterior surfaces of radius and ulna.
Pollicis means that it involves the thumb (pollex). Forms part
of the anatomical snuff box.
Action of muscle
*Abducts and extends thumb
brachial artery
Feeds arm muscles, humerus and elbow joint.
brachial plexus and branches
Ventral rami (branches) of spinal nerves C4-T2 in the axilla
(armpits) innervates (axons that send and receive signals) for
the limb, neck and shoulder.
Plexus = branching and merging and branching, etc.
posterior
anterior
brachioradialis (BRAY-kee-oh-RAY-dee-AL-iss)
Forms radial side of cubital fossa. Assists in supination and
pronation.
Action of muscle
*flexes forearm
cubital fossa
Triangular shaped indention beneath elbow. Contains
cephalic vein and median cubital vein.
extensor carpi radialis brevis (BREV-iss)
Medial to the extensor carpi radialis longus. Lateral to the
extensor digitorum. Posterior of forearm on radial side.
Action of muscle
*extends and abducts wrist
extensor carpi radialis longus
Lateral to the extensor carpi radialis brevis. Medial to the
brachioradialis. Posterior of forearm on radial side.
Action of muscle
*extends and abducts wrist
extensor carpi ulnaris
Ulnar side of posterior forearm. Lateral to extensor digiti
minimi.
Action of muscle
*extends and adducts hand
extensor digiti minimi (DIDJ-ih-ty MIN-ih-my)
Medial to extensor carpi ulnaris. Lateral to extensor
digitorum. Digiti minimi refers to little finger a.k.a. pinky.
Action of muscle
*extends little finger
extensor digitorum
Central muscle on the posterior side that moves fingers.
Action of muscle
*extends fingers
extensor pollicis brevis
Posterior surface. Pollicis means that it involves your thumb
(pollex). Forms part of the anatomical snuff box.
Action of muscle
*extends thumb
extensor pollicis longus
Posterior surface. Pollicis means that it involves your
thumb (pollex). Forms part of the anatomical snuff box.
Action of muscle
*extends thumb
extensor retinaculum
Connective tissue sheath that covers the carpal tunnel on the
posterior side.
flexor carpi radialis (FLEX-ur CAR-pye RAY-dee-AL-iss)
Medial to pronator teres. Aids radial deviation of hand.
Action of muscle
*flexes and abducts hand
flexor carpi ulnaris (ul-NAY-ris)
Ulnar side of anterior forearm. Aids in ulnar deviation of
hand.
Action of muscle
*flexes and adducts hand
flexor digitorum profundus (DIDJ-ih-TOE-rum)
Underneath the flexor digitorum superficialis which is
underneath the Palmaris longus.
Action of muscle
*flexes fingers
flexor digitorum superficialis
(DIDJ-ih-TOE-rum SOO-per-FISH-ee-AY-lis)
Underneath the Palmaris longus and superficial to the flexor
digitorum profundus.
Action of muscle
*flexes fingers
flexor pollicis longus (PAHL-ih-sis)
Anterior surface. Pollicis means that it involves your thumb
(pollex). Found at the same depth as the flexor digitorum
profundus.
Action of muscle
*flexes thumb
flexor retinaculum
White band of connective tissue sheath that covers the carpal
tunnel and keeps stuff organized on the anterior side.
median nerve
Passes between radius and ulna to wrist.
palmaris longus (pal-MERR-iss)
Anchors skin and fascia of palmar region; resists shearing
forces when stress is applied to skin by such actions as
climbing and tool use. Weakly developed and sometimes
absent. (360, Saladin)
Action of muscle
*flexes wrist and tenses palm
pronator quadratus (PRO-nay-tur quad-RAY-tus)
Prime mover of forearm pronation; also resists separation of
radius and ulna when force is applied to forearm through
wrist, as in doing push-ups. (358, Saladin)
Action of muscle
*pronation of forearm
pronator teres (PRO-nay-tur TERR-eez)
Medial to cubital fossa. Assists pronator quadratus in
pronation, but only in rapid or forceful action; weakly flexes
elbow. (358, Saladin)
Action of muscle
*pronates forearm
radial artery
Artery along the radius bone. Feeds posterior forearm
muscles, deep hand muscles, thumb and lateral side of index
finger, joints of elbow and wrist.
anterior
posterior
radial nerve
Nerve along the radius bone. Innervates mainly forearm
flexors; thenar muscles and lumbricals I and II of the hand.
supinator (SOO-pih-NAY-tur)
Found on posterior of forearm underneath the
brachioradialis.
Action of muscle
*supinates forearm
thenar group
Made up of four muscles. “The thenar group of muscles form
the thick fleshy mass (thenar eminence) at the base of the
thumb, except for the adductor pollicis, which forms the web
between the thumb and palm. All are concerned with thumb
movements.” (364, Saladin)
Action of muscles
*move thumb
ulnar artery
Artery along the ulna bone. Feeds medial forearm muscles,
hand muscles and joints; elbow and wrist joints.
ulnar nerve
Nerve along the ulna bone. Passes around medial epicondyle
of elbow and follows ulna.