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Anatomy Of The Upper Limb > Muscle Chart > Flashcards

Muscle Chart Flashcards

1
Q

Pectoralis Major

Chest

A

Proximal: clavicle, sternum, costal cartilages of upper ribs
Distal: Lip of intertubercular sulcus
Innervation: Medial and lateral pectoral nerves
Action: adducts/medially rotates arm (also aids in flexion and extension of the humerus)

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2
Q

Pectoralis Minor

Chest

A

Proximal: Ribs near costal cartilage
Distal: Coracoid Process
Innervation: medial pectoral nerve
Action: Stabilizes the scapula

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3
Q

Subclavius

A

Proximal: first rib
Distal: clavicle
Innervation: Nerve to subclavius
Action: anchors/depresses clavicle

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4
Q

Serratus Anterior

Chest

A

Proximal: lateral surface of ribs
distal: medial border of scapula
Innervation: long thoracic nerve
Action: protracts scapula/holds it agains the thoracic wall

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5
Q

Deltoid

Shoulder

A

Prox: clavicle, acromion, spine of scapular
Distal: deltoid tuberosity
Innervation: axillary nerve
Action: (anterior fibers): flex/medially rotate arm
(Middle fibers): abduct arm
(Posterior fibers): extend/laterally rotate arm

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6
Q

Infraspinatus

Shoulder

A

Prox: infraspinous fossa
Distal: greater tubercle of humerus
Innervation: suprascapular nerve
Action: laterally rotates the arm

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7
Q

Supraspinatus

Shoulder

A

Prox: supraspinous fossa
Distal: Greater tubercle of the humerus
Innervation: suprascapular nerve
Action: initiates arm abduction

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8
Q

Teres Minor

Shoulder

A

Prox: Lateral border of scapula
Distal: greater tubercle of humerus
Innervation: axillary nerve
Action: laterally rotates arm

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9
Q

Teres Major

Shoulder

A

Prox: inferior angle of scapula
Distal: Lip of intertubercular sulcus
Innervation: lower subscapular nerve
Action: adducts/medially rotates the arm

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10
Q

Subscapularis

Shoulder

A

Prox: subscapular fossa
distal: lesser tubercle of humerus
Innervation: upper and lower subscapular nerves
Actions: medially rotates the arm

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11
Q

Biceps Brachii

Arm

A

Prox: (short head): coracoid process; (long head): supraglenoid tubercle
Distal: radial tuberosity and bicipital aponeurosis
Innervation: musculocutaneous nerve
Action: flexes and supinates forearm

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12
Q

Coracobrachialis

Arm

A

Prox: coracoid process
distal: midshaft of humerus
Innervation: musculocutaneous nerve
Action: (weakly) flexes and adducts arm

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13
Q

Brachialis

Arm

A

Prox: Distal humeral shaft
Distal: coronoid process of the ulna
Innervation: musculocutaneous nerve (a little contribution from radial)
Action: flexes forearm

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14
Q

Triceps Brachii

Arm

A

Prox: (long head): infraglenoid tubercle; (lateral and medial heads): shaft of humerus
Distal: olecranon process
Innervation: radial nerve
Action: extends forearm

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15
Q

Anconeus

Arm

A

Prox: lateral epicondyle of the humerus
Distal: proximal ulna
Innervation: radial nerve
Action: (weakly) extends forearm

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16
Q

Pronator Teres

Forearm

A

Prox: coronoid process and medial epicondyle
Distal: radial shaft
Innervation: median nerve
Action: pronates/flexes forearm

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17
Q

Flexor Carpi Radialis

Forearm

A

Prox: medial epicondyle of humerus
Distal: 2nd metacarpal
Innervation: median nerve
Action: flexes/abducts hand

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18
Q

Palmaris Longus

Forearm

A

Prox: Medial epicondyle of humerus
Distal: Flexor Retinaculum and Palmar aponeurosis
Innervation: Median Nerve
Action: flexes hand/tenses palmar aponeurosis

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19
Q

Flexor Carpi Ulnaris

Forearm

A

Prox: Medial spondylitis of humerus and olecranon process
Distal: Pisiform, hook of hamate and 5th metacarpal
Innervation: Ulnar nerve
Action: flexes/adducts hand

20
Q

Flexor Digitorum Superficialis

Forearm

A

Prox: Medial epicondyle of humerus and proximal radius
Distal: middle phalanges of digits 2-5
Innervation: median nerve
Action: flexes PIP and MP joints of digits 2-5

21
Q

Flexor Digitorum Profundus

Forearm

A

Prox: proximal and middle ulna
Distal: distal phalanges of digits 2-5
Innervation: Ulnar nerve (medial half) and Median nerve (lateral half)
Action: Flexes DIP of digits 2-5

22
Q

Flexor Pollicis Longus

Forearm

A

Prox: radial shaft
Distal: distal phalanx of thumb
Innervation: median nerve
Action: flexes thumb

23
Q

Pronator Quadratus

Forearm

A

Prox: distal ulna
Distal: distal readius
Innervation: median nerve
Action: pronates forearm

24
Q

Brachioradialis

Forearm

A

Prox: Supraepicondylar ridge of humerus
Distal: distal radius
Innervation: radial nerve
Action: flexes forearm

25
Q

Extensor Carpi Radialis Longus

Forearm

A

Prox: Lateral supraepicondylar ridge of humerus
Distal: 2nd metacarpal
Innervation: radial nerve
Action: extends/abducts hand

26
Q

Extensor carpi radialis brevis

Forearm

A

Prox: lateral epicondyle of humerus
Distal: 3rd metacarpal
Innervation: radial nerve
Action: extends/abducts hand

27
Q

Extensor Digitorum

Forearm

A

Prox: lateral epicondyle of humerus
Distal: extensor expansion of digits 2-5
Innervation: radial nerve
Action: extends MP and IP joints of digits 2-5

28
Q

Extensor digiti minimi

Forearm

A

Prox: lateral epicondyle of humerus
Distal: extensor expansion of digit 5
Innervation: radial nerve
Action: extends MP and IP joints of digit 5

29
Q

Extensor Carpi Ulnaris

Forearm

A

Prox: lateral epicondyle of humerus and proximal ulna
Distal: 5th metacarpal
Innervation: radial nerve
Action: extends/adducts hand

30
Q

Supinator

Forearm

A

Prox: lateral epicondyle of humerus
Distal: proximal radius
Innervation: radial nerve
Action: supinates forearm

31
Q

Extensor Indices

Forearm

A

Prox: distal ulna
Distal: extensor expansion of digit 2
Innervation: radial nerve
Action: extends digit 2

32
Q

Abductor pollicis longus

Forearm

A

Prox: proximal ulna and radius
Distal: 1st metacarpal
Innervation: radial nerve
Action: Abducts thumb

33
Q

Extensor pollicis longus

Forearm

A

Prox: midshaft of ulna
Distal: distal phalanx of thumb
Innervation: radial nerve
Action: extends thumb

34
Q

Extensor Pollicis brevis

Forearm

A

prox: distal radius
Distal: proximal phalanx of thumb
Innervation: radial nerve
Action: extends thumb

35
Q

Opponens Pollicis

Hand

A

Prox: flexor retinaculum and carpal bones
Distal: 1st metacarpal
Innervation: recurrent branch of median nerve
Action: opposes thumb

36
Q

Abductor Pollicis Brevis

Hand

A

Prox: flexor retinaculum and carpal bones
Distal: proximal phalanx of thumb
Innervation: recurrent branch of median nerve
Action: abducts thumb

37
Q

Flexor Pollicis Brevis

Hand

A

Prox: flexor retinaculum and carpal bones
Distal: proximal phalanx of thumb
Innervation: recurrent branch of median nerve
Action: flexes thumb

38
Q

Adductor Pollicis

Hand

A

Prox: (oblique head): 2nd and 3rd metacarpal and adjacent carpal bones; (Transverse head): 3rd metacarpal
Distal: proximal phalanx of thumb
Innervation: ulnar nerve
Action: adducts thumb

39
Q

Adductor Digiti Minimi

Hand

A

Prox: pisiform
Distal: proximal phalanx of 5th digit
Innervation: ulnar nerve
Action: abducts 5th digit

40
Q

Flexor Digiti Minimi

Hand

A

Prox: hook of hamate
Distal: proximal phalanx of 5th digit
Innervation: ulnar nerve
Action: flexes 5th digit

41
Q

Opponens Digiti

Hand

A

Prox: hook of hamate
Distal: 5th metacarpal
Innervation: ulnar nerve
Action: opposes 5th digit

42
Q

Lumbricals 1+2

Hand

A

Prox: lateral two tendons of FDP
Distal: extensor expansion of digits 2+3
Innervation: median nerve
Action: Flex MP joint and Extend IP joint

43
Q

Lumbricals 3+4

Hand

A

Prox: Median three tendons of FDP
distal: extensor expansion of digits 4+5
Innervation: ulnar nerve
Action: flex MP join, extend IP joint

44
Q 
Dorsal Interossei (4)
(Hand)
A

prox: adjacent sides of metacarpals
Distal: proximal phalanges and extensor expansions
Innervation: ulnar nerve
Action: abducts digits 2-4; assists lumbricals

45
Q 
Palmar Interossei (3)
(Hand)
A

Prox: palmar surface of metacarpals 2,4,5
Distal: proximal phalanges and extensor expansions
Innervation: ulnar nerve
Actions: adducts digits 2,4,5; assists lumbricals

Anatomy Of The Upper Limb (5 decks)

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