arm and hand muscles Flashcards by Lindsey Morse

Name the muscle and action it performs

Abductor Digiti Minimi

Action: Abduct the 5th finger (metacarpophalangeal joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and action it performs

Abductor Pollicis Brevis

Actions: Abduct the thumb (carpometacarpal and metacarpophalangeal joints)

Assist in opposition of the thumb (carpometacarpal joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Abductor Pollicis Longus

Actions:

Abduct the thumb (carpometacarpal joint)

Extend the thumb (carpometacarpal joint)

Abduct the wrist (radiocarpal joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Adductor Pollicis

Actions:

Adduct the thumb (carpometacarpal and metacarpophalangeal joints)

Assist to flex the thumb (metacarpophalangeal joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Anconeus

Action:

Extend the elbow (humeroulnar joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Anconeus

Origin: Lateral epicondyle of the humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Brachialis

Action:

Flex the elbow (humeroulnar joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Brachialis

Origin: Distal half of anterior surface of humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Brachioradialis

Actions:

Flex the elbow (humeroulnar joint)

Assist to pronate and supinate the forearm when movements are resisted (humeroradial joints)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Brachioradialis

Origin: Proximal 2/3rds of the lateral supracondylar ridge of humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Dorsal Interossei

Actions:

DAB (Dorsal AB)

Abduct the 2nd 3rd and 4th fingers at the metacarpophalangeal joints

Assist to flex 2nd 3rd and 4th fingers at metacarpophalangeal joints

Assist to extend 2nd 3rd and 4th fingers at interphalangeal joints

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Extensor carpi radialis brevis

Actions:

Extend the wrist (radiocarpal joint)

Abduct the wrist (radiocarpal joint)

Assist to flex the elbow (humeroulnar joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Extensor carpi radialis brevis

Origin: Common extensor tendon from the lateral epicondyle of humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Extensor carpi radialis longus

Actions:

Extend the wrist (radiocarpal joint)

Abduct the wrist (radiocarpal joint)

Assist to flex the elbow (humeroulnar joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Extensor carpi radialis longus

Origin: Distal 1/3rd of the lateral supracondylar ridge of humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its actions

Extensor carpi ulnaris

Actions:

Extend the wrist (radiocarpal joint)

Adduct the wrist (radiocarpal joint)

How well did you know this?

Not at all

Perfectly

Name the muscle and its origin

Extensor Carpi Ulnaris

Origin: Common extensor tendon from the lateral epicondyle of humerus

How well did you know this?

Not at all

Perfectly

Name the muscle and its action

Extensor Digitorum

Actions:

Extend the 2nd through 5th fingers

(metacarpophalaneal and interphalangeal joints)

Assist to extend the wrist (radiocarpal joint)

Name the muscle and its origin

Extensor Digitorum

Origin: Common extensor tendon from the lateral epicondyle of humerus

Name the muscle and its actions

Extensor pollicis brevis

Actions:

Extend the thumb (metacarpophalangeal and carpometacarpal joints)

Abduct the wrist (radiocarpal joint)

Name the muscle and its actions

Extensor pollicis longus

Actions:

Extend the thumb (interphalangeal, metacarpophalangeal, carpometacarpal joints)

Abduct the wrist (radiocarpal joint)

Name the muscle and its actions

Flexor carpi radialis

actions:

Flex the wrist (radiocarpal joint)

Abduct the wrist (radiocarpal joint)

May assist to flex elbow (humeroulnar joint)

Name the muscle and its origin

Flexor carpi radialis

Origin: Common flexor tendon from medial epicondyle of humerus

Name the muscle and its actions

Flexor carpi ulnaris

Actions:

Flex the wrist (radiocarpal joint)

Adduct the wrist (radiocarpal joint)

Assist to flex the elbow (humeroulnar joint)

Name the muscle and its origin

Flexor carpi ulnaris Origin: Humeral head: common flexor tendon from the medial epicondyle of humerus Ulnar head: posterior surface of proximal 2/3rds of ulna

Name the muscle and its actions

Flexor digitiminimi brevis actions: Flex the 5th finger (metacarpophalangeal joints) Assist in opposition of the 5th finger toward the thumb

Name the muscle and its actions

Flexor digitorum profundus Actions: Flex the 2nd through 5th fingers (metacarpophalangeal and distal interphalangeal joints) Assist to flex the wrist (radiocarpal)

Name the muscle and its origin

Flexor Digitorum Profundus Origin: Anterior and medial surfaces of proximal 3 quarters of ulna

Name the muscle and its actions

Flexor digitorum superficialis Actions: Flex the 2nd through 5th fingers (metacarpophalangeal and proximal interphalangeal joints) Flex the wrist (radiocarpal joint)

Name the muscle and its origin

Flexor digitorum superficialis Origin: Common flexor tendon from medial epicondyle of humerus, ulnar collateral ligament, coronoid process of the ulna, interosseous membrane and proximal shaft of radius

Name the muscle and its actions

Flexor Pollicis Brevis Actions: Flex the thumb (carpometacarpal and metacarpophalangeal joints) Assist in opposition of the thumb

Name the muscle and its actions

Flexor Pollicis Longus Actions: Flex the thumb (interphalangeal joint) Flex the thumb (metacarpophalangeal and carpometacarpal joints) Assist to flex the wrist (radiocarpal joint)

Name the muscle and its actions

Lumbricals Actions: Extend 2nd through 5th fingers at the interphalangeal joints Flex the 2nd through 5th fingers at the metacarpopahalangeal joints

Name the muscle and its actions

Opponens Digiti Minimi Actions: Opposition of the 5th finger at the carpometacarpal joint

Name the muscle and its actions

Opponens Pollicis actions: Oppostion of the thumb at the carpometacarpal joint (bringing the pads of the thumb and 5th finger together)

Name the muscle and its actions

Palmar Interossei Actions: PAD: Palmar ADduct Adduct the thumb, 2nd, 4th, and 5th fingers toward the 3rd finger Assist to flex the thumb, 2nd, 4th, and 5th, at the metacarpophalangeal joints Assist to extend the thumb, 2nd, 4th, and 5th fingers at the interphalangeal joints

Name the muscle and its actions

Palmaris Longus Actions: Tense the palmar fascia Flex the wrist (radiocarpal joint) May assist to flex the elbow (humeroulnar joint)

Name the muscle and its origin

Palmaris Longus Origin: common flexor tendon from the medial epicondyle of humerus

Name the muscle and its actions

Pronator Quadratus Actions: pronate the forearm (radioulnar joints)

Name the muscle and its origin

Pronator Quadratus Origin: Medial, anterior surface of distal ulna

Name the muscle and its actions

Pronator Teres Actions: pronate the forearm (radioulnar joints) Assist to flex the elbow (humeroulnar joint)

Name the muscle and its origin

Pronator Teres Origins: Common Flexor tendon from medial epicondyle of humerus and coronoid process of the ulna

Name the muscle and its actions

Supinator Action: Supinate the forearm (radioulnar joints)

Name the muscle and its origin

Supinator Origin: Lateral epicondyle of humerus, radio collateral ligament, annular ligament and supinator crest of the ulna