Lab Practical upper limb Flashcards by Brent Wright

Pectorales Major

A: Adducts and medially rotates the humerus; clavicular head flexes the humerus

N: Medial and Lateral Pectoral nerves

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Pectorales Minor

A: Protracts and depresses the scapula and functions as an accessory muscle of respiration

N: Medial Pectoral nerve

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Subclavius

A: Pulls lateral end of clavicle downward and forward, thereby acting to resist excessive shoulder elevation and protraction

N: Nerve to subclavius

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Serratus Anterior

A: Protracts scapula, upwardly rotates the glenoid cavity, fixes scapula to thoracic wall/ if lying supine the action is elevation of the ribs

N: Long thoracic N

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Latissimus Dorsi

A: adducts, extends and medial roates the humerus

N: Thoracodorsal Nerve

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External Abdominal Oblique

A:rotates vertebral colum to opposit side and bends trunk to same side

N: lower intercostal n/subcostal n

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Deltoid-Anterior-Middle-Posterior

A: all three together abduction of the humerus;

Anterior with other muscles flexes and medially rotates the humerus.

Posterior portion acting with other muscles extends and laterally rotates the humerus

N: axillary nerve

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Supraspinatus

A: Initiates abduction of the humerus

N: Suprascapular nerve

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Infraspinatus

A: Lateral Rotation of the humerus

N: Suprascapular nerve

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Teres Minor

A: Lateral Rotation of the humerus

N: Axillary Nerve

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Subscapularis

A: Medial rotation of the Humerus

N: Upper and Lower subscapular Nerve

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Teres Major

A: Extension, adduction and medial rotation of the humerus

N: Lower subscapular N

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serratus anterior scapular attachment only

A: Protracts scapula, upwardly rotates the glenoid cavity, fixates scapula to thortacic wall

N:Long Thoracic N

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Long Head Triceps

A: acts at the shoulder joint to extend and adduct the arm

N: radial N.

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Biceps Brachii Long Head/ Short Head

A: Flexes the forearm and supinates the hand, long heads also assist in flexion of the arm

N: Musculocutaneous N

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Brachialis

A: Flexion of the forearm

N: Musculocutaneos N

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Brachioradialis

A: Flexion of the forearm

N: Radial N

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Coracobrachialis

A: Flexion adduction of the humerus

N: Musculocutaneos N

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Triceps Brachii

A: all act to extend the forearm, long head also acts at the shoulder joint to extend and adduct the arm

N: Radial N

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Pronator teres

A: pronates the hand and slightly flexes the forearm

N: Mediain N

Flexor Carpi Radialis

A: Flexes wrist and abducts the hand

N: Median N

Palmaris Longus

A: Flexes the wrist

N: Median N

Flexor Carpi Radialis

A: Flexes the wrist and abducts the hand

N: Median N

Flexor Carpi Ulnaris

A: Flexes wrist Adducts hand

N: Ulnar N

Flexor Digitorum superficialis

A: Flexes proximal interphalangeal joints, assists in flexion of the metacarpophalangeal joints, wrist and forearm I: median N

Flexor Digitorum Profundus

A: Flexion of distal I-P joints, assists in flexion of proximal I-P, MP and wrist joints N: Lateral Portion to digits 2,3 =Median N Medial portion digits 4,5 =Ulnar N

Flexor Pollicis Longus

A: Flexes Thumb N: Median N. Anterior interosseous branch

Pronator Quadratus

A: Pronates the Hand N: Median N. anterior interosseous branch

Extensor Carpi Radialis Longus

A: Extends and abducts the hand N: radial N

Extensor Carpi Radialis brevis

A: Extends and assists in abduction of the hand N: Deep branch of the radial N

Extensor Digitorum

A: Extends the digits 2-5 and assists in extension of the hand N: Radial N deep branch

Extensor digiti minimi

A: Extension of fifth digit N: Radial N

Extensor carpi ulnaris

A: extends and adducts the hand N: Radial N. deep branch

Abductor pollicis Longus

A: abducts the thumb and wrist and assists extension of the thumb N: Posterior interosseous N of deep radial

Extensor Pollicis brevis

A: extends proximal phalanx of thumb and first metacarpal N: Posterior interosseous N of deep radial

Extensor Pollicis Longus

A: Extends the thumb (I-P and M-P joints) N: Posterior interosseous N of deep radial

Extrensor Indicis

A: Extends the index finger N: Posterior interosseous N of deep radial

supinator

A: Supinates the hand N: Deep branch of Radial N

Anconeus

A: Extension of the forearm N: Radial N

Abductor pollicis brevis

A: abducts thumb with slight flexion of the carpometacarpal joint N: Median N (recurrent)

Flexor Pollicis brevis

A: Flexion of the thumb at carpometacarpal and metacarpophalangeal joint N: Superficial head: Median N (recurrent); Deep Head: deep branch of ulnar N.

Opponens Pollicis

A: Opposition of thumbs to digits N: Median N

Abductor digiti Minimi

A: abducts and flexes metacarpophalangeal joint of digiti minimi N: Ulnar N Deep branch

Flexor Digiti minimi brevis

A: Flexes Diditi minimi at metacarpophalangeal joint N: Ulnar N deep branch

Opponens Digiti Minimi

A: Pulls 5th Metacarpal towards thumb during opposition or when grasping N: Ulnar N deep branch

Lumbricals

A: Flexes metacarpophalangeal joints and extends interphalangeal joints N: Median: branch from cutaneous branches to index and middle finger ( lumbricals 1 and 2) Ulnar: deep branch (Lumbricals 3,4)

Adductor Pollicis

A: adducts the thumb N: Ulnar Deep branch

Palmar Interossei

A: adducts digits 1, 2, 4, 5. flexes M-P joints and extends I-P joints of digits 1,2,4,5 N: Ulnar N deep branch

Dorsal Interossei

A: abducts digits 2,3,4 flex M-P joints and extend I-P joints of digits 2,3,4 N: Ulnar N Deep branch