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ECS 1 final > UQ muscle actions > Flashcards

UQ muscle actions Flashcards

(78 cards)

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1
Q

Pectoralis major - Clavicular

A

shoulder flexion, MR, horizontal adduction of humerus toward opposite shoulder

Origin fixed: humeral adduction and MR
Insertion fixed: assists in elevation of thorax in forced inspiration

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2
Q

Pectoralis major - Sternal fibers

A

depress shoulder girdle by virtue of attachment of the humerus and obliquely adduct the humerus toward opposite iliac crest

origin fixed: humeral adduction and MR
insertion fixed: assists in elevation of thorax in forced inspiration

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3
Q

Pectoralis minor

A

origin fixed: tilts scapula anteriorly
insertion fixed: assist in forced inspiration

may help with downward rotation of the scapula or at least prevents upward rotation. also internally rotates the scapula

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4
Q

Subclavius

A

draws the clavical down and stabilizes joint

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5
Q

latissimus dorsi

A

origin fixed: shoulder MR, adduction and extension.
insertion fixed: assists in anterior and lateral pelvic tilts, assists in lumbar hyperextension

depresses shoulder girdle, assists in lateral flexion

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6
Q

teres major

A

shoulder MR, add, ext; scapular internal rotation

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7
Q

Serratus Anterior

A

origin fixed: abducts and upwardly rotates scapula. Holds medial border of scapula firmly against the rib cage. Lower fibers may depress the scapula and upper fibers may elevate

Serratus anterior is the best scapular upward rotator and posterior tilter. Serratus also helps externally rotate scapula

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8
Q

supraspinatus

A

abduct shoulder, stabilizes head of humerus in glenoid cavity during movements, may assist with shoulder LR from neutral to full LR

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9
Q

Infraspinatus

A

LR shoulder, stabilizes head of humerus in glenoid cavity during movements, scapular internal rotation

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10
Q

subscapularis

A

MR shoulder, stabilizes head of humerus in glenoid cavity during movements, prevents humeral anterior glide

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11
Q

anterior deltoid

A

shoulder flexion, abduction, and MR

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12
Q

middle deltoid

A

shoulder abduction; scapular downward rotation

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13
Q

posterior deltoid

A

shoulder extension, abduction, and LR; scapular internal rotation

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14
Q

upper trapezius

A

elevate and upwardly rotate scapula; extend neck

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15
Q

middle trapezius

A

adduct (retract) scapula

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16
Q

lower trapezius

A

depress and help upper fibers upwardly rotate scapula

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17
Q

levator scapulae

A

elevates medial border of scapula while downwardly rotating lateral angle; helps rhomboids and trapezius pull scapula upward and medially; bends neck laterally

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18
Q

rhomboid major

A

adducts, elevates, downwardly rotates scapula

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19
Q

rhomboid minor

A

adduct, elevate scapula; rotate scapula so that glenoid cavity faces caudally

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20
Q

teres minor

A

LR shoulder; stabilizes head of humerus in glenoid cavity during movements; scapular internal rotation

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21
Q

pronator teres

A

pronate forearm, assists in elbow flexion

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22
Q

flexor carpi radialis

A

abduct, flex wrist; assists in forearm pronation and elbow flexion

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23
Q

palmaris longus

A

tenses palmar fascia, flex wrist, assists in elbow flexion

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24
Q

flexor digitorum superficialis

A

flexion of PIP of 2nd-5th digits; assist in MCP joint flex and wrist flex

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25
flexor digitorum profundus
flexes DIP of index, middle, ring, and little fingers. Assists in PIP, MCP, and wrist flexion
26
flexor pollicis longus
thumb IP flexion; assists in MCP and CMC flex and wrist flexion
27
flexor pollicis brevis
flex MCP, CMC of thumb | assists in opposition, may extend IP joint
28
pronator quadratus
pronate forearm
29
abductor pollicis brevis
palmar abduction of thumb, CMC and MCP joints; extend thumb IP joint. Assists in opposition and flexion, MR of CMC jt
30
opponens pollicis
opposes thumb CMC
31
Lumbricals
extends IP joint and simultaneously flex MCP joints of 2-5th digits; extend IP joints with MCP extended
32
flexor carpi ulnaris
flex, ulnarly deviate wrist; assists in flex of elbow
33
abductor digiti minimi
abduct small finger MP joint; assists in opposition and flexion of CMC of 5th digit and assists in extension of IP joint
34
flexor digiti minimi
flex MCP joint of little finger; assists in opposition
35
opponens digiti minimi
opoposes 5th CMC joint
36
interossei
dorsal: abduct palmar: adduct
37
adductor pollicis
adduct CMC and adduct/assists in flexion of MCP joint of thumb, assists in thumb opposition and ext IP joint
38
triceps brachii
extend elbow | long head: assists in adduction and extension of shoulder
39
anconeus
extend elbow, stabilize ulna during pronationa nd supination
40
brachioradialis
elbow flexion; assits in pronation and supination of forearm
41
extensor carpi radialis longus
extensor, radially deviates wrist, assits in elbow flexion
42
extensor carpi radialis brevis
extensor wrist, assist in radial deviation
43
extensor digitorum
extend MCP joint and in conjunction with lumbricals and interossei, extend IP joints of 2-5th digits assist in abducting index, ring, little finger extend and radial deviate wrist
44
extensor digiti minimi
extend MCP join and in conjunction with lumbricals and interossei, extend IP joints of little finger; assist in abduction of little finger
45
extensor carpi ulnaris
extend and ulnarly deviate wrist
46
extensor indicis
extend MCP joint and extend IP joint of index finger; assits in adduction of index finger
47
abductor pollicis longus
extend CMC joint of thumb with slight abduction; wrist radial deviation; assists wrist flexion
48
extensor pollicis longus
extend IP joint; assists thumb MCP and CMC exten, assists wrist radial deviation and extension
49
extensor pollicis brevis
extend thumb MCP joint, extend and abduct CMC joint, assists in radial deviation
50
Supinator
supinate forearm
51
coracobrachialis
flex and adduct shoulder
52
biceps brachii
flex shoulder (weakly); flex and supinate forearm at the elbow
53
brachialis
elbow flexion
54
external oblique
flexes, rotates, and laterally flexes vertebral column; compresses abdomen
55
internal oblique
flexes, rotates, and laterally flexes vertebral column; compresses abdomen
56
rectus abdominis
flexes vertebral column, compresses abdomen
57
masseter
elevates the mandible, small effect on side to side movement, protraction, and retraction pulls mouth closed
58
temporalis
elevates mandible (closes the jaw); posterior fibers retrude mandible; assists with alteral deviation
59
medial pterygoid
elevation (closes the jaw), protrusion, deviation to opposite side
60
rectus capitis anterior
anterior flexion of head on neck (nodding) | ipsilateral rotation
61
rectus capitis posterior major
extend head, turns face to same side
62
rectus capitis posterior minor
extend, rotate neck
63
oblique capitis inferior
rotate head to same side
64
oblique capitis superior
extend head, lateral flexion to same side
65
rectus capitis lateralis
lateral flexion of head to same side
66
scalene anterior
flex lower cervical vert and lat bending; elevate 1st rib
67
scalene medius
lat bend of c-spine, elevates rib 1
68
scalene posterior
lat bend of c spine, elevates rib 2
69
platysma
flex neck
70
orbicularis oculi
close eyelids
71
frontalis
raise eyebrows
72
orbicularis oris
close lips and protrude forward (whistle/kiss)
73
zygomaticus major
draw up angles of mouth (smile)
74
mentalis
raises and protrudes the lower lip and wrinkle skin of the chin, as in pouting
75
levator anguli oris
draw angle of mouth straight upward, deepening the furrow from the side of the nose to the side of the mouth (sneer- show the canine tooth on one side)
76
buccinator
press cheeks firmly against the side teeh, pulling back the angle of the mouth (blowing a trumpet)
77
corrugator supercilii
draw eyebrows together (as in frowaning)
78
sternocleidomastoid
unilaterally: rotates C-spine to opposite side and lateral flex to same side bilaterally; flex lower C-spine (forward translation), extend upper cervical (head on neck extension)

ECS 1 final (5 decks)

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