Muscles functions Flashcards

1
Q

Pectoralis Major

A

Adducts and meidially roates the upper limb

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2
Q

Pectoralis Minor

A

Stabilises the scapula by drawing it anteroinferiorlu against the thoracic wall

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3
Q

Serratus anterior

A

Rotates the scapula

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4
Q

Subclavius

A

anchors and depresses the clavicle

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5
Q

Trapezius

A

Upper fibres elevate the scapula and rotate during abduction of the arm
Middle fibres - retract the scapula
Lower scapula - pulls the scapula inferiorly

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6
Q

Lattisimus dorsi

A

Extends, adducts and medially rotates the upper limb

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7
Q

levatator scapulae

A

elevates the scapula

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8
Q

Rhomboids

A

Reatracts and rotates the scapula

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9
Q

Deltoid

A

Anterior fibres- flexion and medial rotation
Posterior fibres- extension and lateral rotation
Middle fibres- the maor abductor of the arm

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10
Q

Teres major

A

Adducts the shoulder and medially rotates the arm

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11
Q

Supraspinatus

A

Abducts the arm 0-15 and assists deltoid for 15-90 degrees

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12
Q

Infraspinatus

A

Laterally rotates the arm

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13
Q

Subscapularis

A

Medially rotates the arm

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14
Q

Teres minor

A

Laterally rotates the arm

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15
Q

Biceps Brachii

A

Supination of the forearm

Flexes the arm at the elbow and the shoulder

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16
Q

Coracobrachialis

A

Flexion of the arm at the shoulder, and weak adduction

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17
Q

Brachialis

A

Flexion at the elbow

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18
Q

Triceps brachii

A

extension of the arm at the elbow

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19
Q

FCU

A

Flexion and adduction at the wrist

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20
Q

Palmaris Longus

A

Flexion at the wrist

21
Q

Flexor carpi radialis

A

Flexion and abduction at the wrist

22
Q

Pronator teres

A

Pronation of the forearm

23
Q

Flexor digitrorum superficialis

A

Flexes the metacarpophalangeal joints and proximal interphalangeal joints at the 4 fingers, and flexes the wrist

24
Q

Flexor Digitorum Profundus

A

Only muscle that can flex the distal interphalangeal joints of the fingers.
Flexes at metacarpophalangeal joints and at the wrist

25
Q

Flexor Pollicis longus

A

Flexes interphalangeal joint and metacarpophalangeal joint of the thumb

26
Q

Pronator Quadratus

A

Pronates the forearm

27
Q

Brachioradialis

A

Flexes at the elbow

28
Q

Extensor Carpi radialis Brevis

A

Extends and abducts the wrist

29
Q

Extensor Carpi radialis longus

A

extends and abducts the wrist

30
Q

Extensor Digitorum

A

Extends medial four fingers at the MCP and IP joints

31
Q

Extensor digiti minimi

A

Extends the little finger, and contributes to extension of the wrist

32
Q

Extensor Carpi ulnaris

A

Extension and adduction of the wrist

33
Q

Aconeus

A

Extends and stabilises the elbow joint.

Abducts the ulna during pronation of the forearm

34
Q

Supinator

A

supinates the forearm

35
Q

Abductor pollicis longus

A

Abducts the thumb

36
Q

Extensor Pollicis brevis

A

Extends at the metacarpophalangeal and carpometacarpal

37
Q

extensor pollicis longus

A

extends all joints of the thumb

38
Q

Extensor Indicis propius

A

Extends the index finger

39
Q

opponens pollicis

A

opposes the thumb, by medially rotating and flexing the metacarpal on the trapezium

40
Q

Abductor Pollicis brevis

A

Abducts the thumb

41
Q

Flexor pollicis brevis

A

Flexes the MCP joint of the thumb

42
Q

opponnes digiti minimi

A

Rotates the metacarpal of the little finger towards the palm producing opposition

43
Q

abductor digiti minimi

A

abducts the little finger

44
Q

Flexor digiti minimi brevis

A

Flexes the MCP joint of the little finger

45
Q

Lumbricals

A

Flex at the MCP joint, and extend at the interphalangeal joints of each finger

46
Q

Dorsal interossei

A

Abduct the fingers at the MCP joint

47
Q

Palmar interossei

A

Adducts the finger at the MCP joint

48
Q

palmaris brevis

A

Wrinkles the skin of the hypothenar eminence and deepens the curvature of the hand, improving grip

49
Q

Adductor pollicis

A

Adductor of the thumb