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ESA 2 > Muscles of the upper limb > Flashcards

Muscles of the upper limb Flashcards

0
Q

Pectoralis Minor

A
  • Depression of the shoulder

- Medial pectoral nerve innervation

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1
Q

Pectoralis Major

A
  • Adduct and medially rotate the humerus at the shoulder

- Medial and lateral pectoral nerve innervation

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2
Q

Serratus Anterior

A
  • Rotates the scapula (allowing arm to be raised >90degrees)
  • Holds scapula against the ribcage

-Long thoracic nerve innervation

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3
Q

Subclavius

A
  • Anchors and depresses the clavicle

- Subclavian nerve innervation

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4
Q

Trapezium

A
  • Upper fibres elevate and rotate the scapula during abduction of the arm
  • Middle fibres retract the scapula
  • Lower fibres pull scapula inferiorly

-Accessory nerve innervation

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5
Q

Latissimus Dorsi

A
  • Extends, adducts and medially rotates the upper limb

- Thoracodorsal nerve innervation

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6
Q

Levator Scapulae

A
  • Elevates the scapula

- Dorsal scapula nerve innervation

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7
Q

Rhomboids

A
  • Retracts and rotates the scapula

- Dorsal scapula nerve innervation

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8
Q

Deltoid

A
  • Anterior fibres flex arm at the shoulder
  • Posterior fibres extend arm at shoulder
  • Middle fibres abduct the arm (+15degrees)

-Axillary nerve innervation

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9
Q

Teres Major

A
  • Adducts the shoulder
  • Medially rotates the arm

-Lower subscapula nerve innervation

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10
Q

Supraspinatous

A
  • Abducts the arm 0-15degrees, then assists deltoid

- Suprascapula nerve innervation

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11
Q

Infraspinatous

A
  • Laterally rotates the arm

- Suprascapula nerve innervation

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12
Q

Subscapularis

A
  • Medially rotates the arm

- Upper and lower subscapula nerves

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13
Q

Teres Minor

A
  • Laterally rotates the arm

- Axillary nerve innervation

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14
Q

Biceps Brachii

A

(Long head: supraglenoid tubercle of scapula. Short head: coracoid process of scapula. Both go to the radial tuberosity)

  • Supination of the forearm
  • Flexes arm at the elbow/shoulder

-Musculocutaneous nerve innervation

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15
Q

Coracobrachialis

A
  • Flexor of the arm at the shoulder

- Musculocutaneous nerve innervation

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16
Q

Brachialis

A
  • Flexor of the arm at the elbow

- Musculocutaneous nerve innervation

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17
Q

Triceps Brachii

A

(Infraglenoid tubercle/humerus - either side of radial groove; to the olecranon of the ulna)

  • Extension of the arm at the elbow
  • Radial nerve innervation
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18
Q

Pronator Teres

A
  • Pronation of the forearm

- Median nerve innervation

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19
Q

Flexor carpi radialis

A
  • Flexion and abduction at the wrist

- Median nerve innervation

20
Q

Palmaris Longus

A
  • Flexion at the wrist

- Median nerve innervation

21
Q

Flexor carpi ulnaris

A
  • Flexion and adduction at the wrist

- Ulnar nerve innervation

22
Q

Flexor digitorum superficialis

A
  • Flexion at the MCP joints and proximal IP joints of the fingers
  • Flexion at the wrist

-Median nerve innervation

23
Q

Flexor digitorum profundus

A
  • Flexion at the distal IP joints and MCP joints of the fingers
  • Flexion at the wrist
  • Ulnar nerve innervation (little fingers and ring fingers)
  • Median nerve innervation (middle and index fingers)
24
Q

Flexor pollicis longus

A
  • Flexion of the IP and MCP joint of the thumb

- Median nerve innervation

25
Q

Pronator quadratus

A
  • Pronation of the forearm

- Median nerve innervation

26
Q

Brachioradialis

A
  • Flexion at the elbow

- Radial nerve innervation

27
Q

Extensor carpi radialis longus and brevis

A
  • Extension of the wrist
  • Abduction of the wrist

-Radial nerve innervation

28
Q

Extensor digitorum

A
  • Extends medial four fingers at the MCP and IP joints

- Radial nerve innervation

29
Q

Extensor digiti minimi

A
  • Extension of the little finger
  • Extension at the wrist

-Radial nerve innervation

30
Q

Extensor carpi ulnaris

A
  • Extensor of the wrist
  • Adduction of the wrist

-Radial nerve innervation

31
Q

Aconeus

A
  • Moves the ulna during pronation
  • Extension at the elbow

-Radial nerve innervation

32
Q

Supinator

A
  • Supination of the forearm

- Radial nerve innervation

33
Q

Abductor pollicis longus

A
  • Abduction of the thumb

- Radial nerve innervation

34
Q

Extensor pollicis brevis

A
  • Extension at the MCP and carpometacarpal joint of the thumb
  • Radial nerve innervation
35
Q

Extensor pollicis longus

A
  • Extension of all joints of the thumb (3)

- Radial nerve innervation

36
Q

Extensor indicis

A
  • Extension of the index finger

- Radial nerve innervation

37
Q

Oppenens Pollicis

A
  • opposes the thumb

- median nerve innervation

38
Q

Abductor Pollicis Brevis

A
  • Abducts the thumb

- Median nerve Innervation

39
Q

Flexor Pollicis Brevis

A
  • Flexes the MCP joint of the thumb

- median nerve innervation

40
Q

Opponens Digiti Minimi

A
  • Opposes the little finger

- ulnar nerve innervation

41
Q

Abductor Digiti Minimi

A
  • Abducts the little finger

- ulnar nerve innervation

42
Q

Flexor Digiti Minimi Brevis

A
  • Flexes the MCP joint of the little finger

- Ulnar nerve innervation

43
Q

4 lumbricals

A

-Flex the MCP joint and extend the IP joint of each finger

  • Median 2 (little and ring fingers) = ulnar nerve innervation
  • Lateral 2 (index and middle fingers) = median nerve innervation
44
Q

Dorsal Interossei

A
  • Abducts the fingers at the MCP joint

- ulnar nerve innervation

45
Q

Palmar Interossei

A
  • Adducts the fingers at the MCP joint

- Ulnar nerve innervation

46
Q

Palmaris Brevis

A
  • wrinkles the skin of the thenar eminence and deepens the curvature of the hand
  • ulnar nerve innervation
47
Q

Adductor Pollicis

A
  • Adducts the thumb

- Ulnar nerve innervation

ESA 2 (7 decks)

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