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30 Cards in this Set
- Front
- Back
flexor carpi radialis
|
flex and radially diviate
median nerve |
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flexor carpi ulnaris
|
wrist flexion, ulnar diviation
ulnar nerve |
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Palmaris longus
|
wrist flexion
median nerve |
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Extensor carpi radialis longus and brevis
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wrist extension and radial deviation
radial nerve |
|
Extensor Carpi Ulnaris
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wrist extension and ulnar deviation
Radial nerve |
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Felxor digitorum superficialis
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flex wrist, PIP flexion.
It is compartmentalized to allow individule flexion of PIP joints Median nerve |
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Flexor digitorum profoundus
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flexes wrist and DIP flexion
Digits 2&3 are median nerve Digits 4&5 are ulnar nerve |
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Extensor digitorum
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wrist extension and IP extension of digits 2-5
Radial nerve |
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Extensor digiti minimi
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extension of fifth digit and assists with wrist extension
radial nerve |
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Extensor indicis
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extends second digit
radial nerve |
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Dorsal Interossei
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is intrinsic muscle located on dorsal side of the hand.
It ABducts 234 digits, adduct 3 digit and first dorsal interossei assists thumb adduction ulnar |
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Palmar interossei
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is intrinsic located on palmar side
adducts 245 digits ulnar nerve |
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Hypothenar muscles are
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all intrinsic
innervated by ulnar nerve include: abductor digiti minimi (abd MCP j flexor digiti minimi (flex MCP j) opponenes digiti minimi (opposistion) |
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Extrinsic thumb muscles
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are all innervated by radial n
include: extensor pollicus longus (ext CMC MCP and IP and assists wrist ext) extensor pollicis brevis (ext CMC and MCP and assists wrist ext) Abductor pollicis longus (abducts wrist and CMC) |
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Extrinsic thumb muscles that are/is innervated by median nerve . . .
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lexor pollicis longus (flexes IP of thumb and assists MCP CMC and wrist flexion)
innervated by median nerve |
|
thenar muscles
|
opponens pollicis (opposition of thumb and median n)
Abductor pollicis brevis (abducts CMC and MCP and assists in opposition Inn by MedianN) Flexor Pollicis brevis (flex CMC and MCP and assists in opposition Inn by median and Ulnar N) adductor Pollicis (adducts CMC and MCP and inn by ulnar nerve) |
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Brachialis
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*acts only during elbow flexion, reason because it inserts on the ulna, so it provides flexion in all radioulnar positions and max force is at 120 deg flexion
innerated by musculocutaneous |
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Biceps brahii
|
acts at shoulder and elbow and radioulnar joints
Greatest flexion force is between 30-120 and this improves with shoulder hyperextension musculocutaneous n |
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more biceps brachii
|
it inserts on the radius, so the force is greatest with a neutral or supinated wrist and is weak when pronated. It is also only active against resistance
|
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brachioradialis
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primarily an elbow flexor and strongest in neutral posistion
can be a supinator or a pronator depending on hand position (pronates during flexion if supinated and vise) max force is at 120 degress flexion Radial nerve |
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pronator teres
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Primarily is a forearm pronator, but will provide additional flexion force to overcome high resistance
medial nerve |
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triceps brachii
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has three heads
medial=*"workhorse extensor" long h=least active short h=strongest (but relatively inactive unless against resistance) radial nerve |
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anconeus
|
orks with triceps to extend elbow
abducts the ulna during forearm pronation elbow joint stabilizer radial nerve |
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pronator quadratus
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forearm pronator, not technically at elbow.
has greater activity than pronator teres regardless of forearm position, speed of contraction, and resistance load median N |
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Supinator
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provides supination at all elbow flexion angles
radial nerve |
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List the muscles and their nerves for scapular motion
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trapezius-spinal accessory
levator scap-dorsal scapular rhomboids- dorsal scap serratus anterior=long thoracic pectoralis minor-pectoral n |
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list the muscles that elevate the scap
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levator scapulae
rhomboid major/minor upper trap upper serratus anterior |
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Muscles of depression
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lower trapezius
lower serratus anterior |
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muscle that pronate the scap
then the muscles that retract |
serratus anterior (upper and lower)
Trapezius and rhomboids |
|
muscles that laterally rotate the scap
muscles the medially rotate the scap |
upper and lower traps and lower serratus anterior
levator scap rhomboids and anterior pec minor and upper serratus anterior |