Upper Extremity Muscles Flashcards by Brigid Griffin

Platysma

O: inferior border of mandible and skin of the lower face
I: fascia and skin over pec major and deltoid
N: cervical branch of the facial nerve
A: tenses skin of the neck, facial expression

How well did you know this?

Not at all

Perfectly

Sternocleidomastoid

O: mastoid process, lat 1/2 of superior nuchal line
I: sterno: anterior sternum
clav: middle 1/3 of clavicle
N: accessory nerve (CN XI)
A: uni> flex neck same side, rot head so face is turned opp and superior
bi> neck flex, cap ext, raises sternum on forced inspiration

How well did you know this?

Not at all

Perfectly

Anterior Scalene

O: anterior tubercles of C3-C6
I: scalene tubercle and first rib
N: ventral rami C4-C6
A: elevates first rib, lat bend neck same side, rot head to opp side

How well did you know this?

Not at all

Perfectly

Middle Scalene

O: post tubercles of C2-C7
I: sup. surface of 1st rib
N: ventral rami C3-C8
A: lat bend to same side, rot to opp side, elevates first rib, cervical flexion

How well did you know this?

Not at all

Perfectly

Posterior Scalene

O: post tubercles of C4-C6
I: 2nd rib
N: ventral rami C6-C8
A: elevates 2nd rib, bend to same side, rot to opp side

How well did you know this?

Not at all

Perfectly

Supraspinatus

O: supraspinous fossa
I: superior facet of greater tubercle of the humerus
N: suprascapular nerve
A: abduction, shoulder stabilization

How well did you know this?

Not at all

Perfectly

Infraspinatus

O: infraspinous fossa
I: middle facet of greater tubercle of humerus
N: suprascapular nerve
A: lateral rotation, shoulder stabilization

How well did you know this?

Not at all

Perfectly

Subscapularis

O: subscapular fossa
I: lesser tubercles of humerus
N: lower and upper subscapular nerves
A:medial rotation, shoulder stabilization

How well did you know this?

Not at all

Perfectly

Teres Minor

O: middle part of lateral border of scapula
I: inferior facet of greater tubercle of humerus
N: axillary nerve
A: lateral rotation, shoulder stabilization

How well did you know this?

Not at all

Perfectly

Deltoid

O: ant-lateral 1/3 clavicle
    mid- acromion
    post- spine of scapula
I: deltoid tuberosity
N: axillary
A: ant- flexion, med rotation, horizontal adduction
    mid- abduction
   post- extension, lateral rotation, horizontal abduction

How well did you know this?

Not at all

Perfectly

Teres Major

O: posterior surface of inferior angle of scapula
I: medial lip of intertubecular groove of humerus
N: lower subscapular nerve
A: extension from flexion, medial rotation, adduction

How well did you know this?

Not at all

Perfectly

Subclavius

O:junction of 1st rib and its costal cartilage
I:inferior surface of middle 1/3 of clavicle
N:nerve to subclavuis
A: depresses and moves clavicle forward, assists shoulder depression

How well did you know this?

Not at all

Perfectly

Serratus Anterior

O: ribs 1-8
I: anterior surface of the meddial border of the scapula
N: long thoracic nerve
A: holds scap to thoracic cage scap abduction, *works with trap to rot scapula to allow shoulder abduction

How well did you know this?

Not at all

Perfectly

Pectoralis Minor

O: ribs 3-5 near costal cartilage
I: coracoid process
N: medial and lateral pectoral nerves
A: protraction, elevates ribs in forced inspiration

How well did you know this?

Not at all

Perfectly

Pectoralis Major

O: clav> ant. surface of med 1/2 clavicle
stern> ant. surface of sternum, sup. 6 costal cartilages, aponeurosis of ext oblique
I: lat lip of intertubecular groove
N:medial and lateral pectoral nerves
A: abducts, med rotates, elevates sternum
clav> horiz. adduction, flex, med rot
stern> oblique adduction, shoulder ext

How well did you know this?

Not at all

Perfectly

Triceps Brachii

O: Long: infraglenoid tubercle
med: post. humerus inf. to radial groove
lat: post humerus sup. to radial groove
I: olecranon
N:radial
A: elbow extension

How well did you know this?

Not at all

Perfectly

Palmaris Longus

O: medial epicondyle
I: palmar aponeurosis
N: median nerve
A: tenses palmar aponeurosis, assists wrist flexion

How well did you know this?

Not at all

Perfectly

Pronator Quadratus

O: distal 1/4 ulna
I: distal 1/4 radius
N: median nerve
A: pronates forearm

How well did you know this?

Not at all

Perfectly

Flexor Digitorum Superficialis

Study These Flashcards

O: medial epicondyle, coronoid process, oblique line radius
I: mid phalanx of digits 2-5
N:median nerve
A: flexes PIP joints

Flexor Digitorum Profundus

Study These Flashcards

O: upper 3/4 of anterior and medial surfaces of ulna, coronoid process
I: distal phalanges of digits 2-5
N: digits 2-3> median nerve
digits 4-5> ulnar nerve
A: flexion of DIP, MCP, PIP joints of digits 2-5 and wrist flexion

Flexion Pollicis Longus

Study These Flashcards

O: mid shaft radius
I: distal phalanx thumb
N: median nerve
A: flexion IP, MCP, CMC joints of thumbs

Pronator Teres

Study These Flashcards

O: humerus: proximal to medial epicondyle
     ulna: coronoid process
I: lateral surface of radius
N: median nerve
A: pronation of forearm

Flexor Carpi Radialis

Study These Flashcards

O: medial epicondyle
I: metacarpals 2-3
N: median nerve
A: wrist flexion, radial deviation

Flexor Carpi Ulnaris

Study These Flashcards

O:medial epicondyle, olecranon, posterior border of ulna
I: pisiform, hook of hamate, 5th metacarpal
N: ulnar nerve
A: wrist flexion, ulnar deviation

Extensor Digitorum

O: lateral epicondyle I: extensor expansion of 2-5 N: radial nerve A: extends MCP, PIP, DIP of 2-5

Brachioradialis

O: lateral supracondylar ridge I: distal radius N:radial A: elbow flexion from all angles

Extensor Carpi Radialis Longus

O: lateral supracondylar ridge I: 2nd MC N:radial A: wrist extension, radial deviation

Extensor Carpi Radialis Brevis

O: lateral epicondyle I: 3rd MC N:radial A: wrist extension

Extensor Carpi Ulnaris

O: lateral epicondyle I: 5th MC N: radial A: wrist extension, ulnar deviation

Supinator

O: lateral epicondyle, supinator crest of ulna I: upper shaft of radius, tuberosity, and oblique line N: radial A: supinates forearm

Extensor Pollicis Brevis

O: distal radius I: prox phalanx thumb N: radial A: extends MCP of thumb, extends/adducts CMC of thumb

Extensor Indicis

O: distal ulna I: extensor expansion of 2nd digit N: radial A: extends MCP of 2nd digit

Abductor Pollicis Longus

O:posterior ulnar and radial shafts I: 1st MC and trapezium N: radial A: extends and abducts thumb, radial deviation

Extensor Pollicis Longus

O:mid shaft ulna I: distal phalanx of thumb N:radial A: extends IP of thumb

Extensor Digiti Minimi

O: lateral epicondyle I: extensor expansion of 5th digit N:radial A: extends MCP, PIP, DIP of 5th digit

Abductor Pollicis Brevis

O: scaphoid and trapezium I: prox phalanx of thumb N: recurrent branch of the median nerve A: abduction of CMC and MCP jonts of thumb

Opponens Pollicis

O:trapezium I: 1st MC N:recurrent branch of the median nerve, ulnar nerve A: opposition of thumb

Flexor Pollicis Brevis

O: superficial: trapezium deep: trapezoid and capitate I: prox phalanx thumb N: superficial: recurrent branch of the median nerve deep: ulnar nerve A: flexion of MP and CMC joints of thumb *assist thumb oppostion

Flexor Digiti Minimi Brevis

O:hook of hamate and flexor retinaculum I: prox phalanx of 5th digit N: ulnar nerve A: MCP flexion of 5th digit *assist in opposition of 5th digit

Abductor Digiti Minimi

O: pisiform, tendon of flexor carpi ulnaris, pisohamate ligament I: prox phalanx of 5th digit, dorsal expansion of extensor digiti minimi N: ulnar nerve A: abduction of 5th digit *assists opposition of 5th digit

Opponens Digiti Minimi

O: hook of hamate and flexor retinaculum I:medial border of 5th metacarpal N:ulnar nerve A: opposition of little finger to thumb

Adductor Pollicis

``` O:oblique head: capitate, MC base2 and 3 transverse head: shaft of 3 MC I: prox phalanx thumb N: ulnar nerve A: adduction of CMC joint of thumb ```

Anconeus

O:lateral epicondyle and capsule of elbow joint I: olecranon and superior surface ulna N: radial A: elbow extension

Biceps Brachii

O: long: supraglenoid tubercle, labrum, capsule of shoulder joint short: coracoid process I: radial tuberosity N: musculocutaneous nerve A: elbow flexion, shoulder flexion, supination

Brachialis

O: distal half of humerus I: ulnar tuberosity and coronoid process N: musculocutaneous nerve A: flexion in all positions

Coracobrachialis

O: coracoid process I: mid humerus N: musculocutaneous A: shoulder flexion and adduction

Upper Extremity Muscles Flashcards

(46 cards)