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Functional Anatomy > Pectoral Girdle muscles > Flashcards

Pectoral Girdle muscles Flashcards

1
Q

Origin and insertion of the UPPER Trapezius

A

o - occipital protuberance , medial 1/3 nuchal line, lig nuchae
I - lateral 1/4 clavicle, AC process

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2
Q

Origin and insertion of the MIDDLE Trapezius

A

o - T1-5

I - AP, scapular spine

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3
Q

Origin and insertion of the LOWER Trapezius

A

o - T6-12

I - Root of spine

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4
Q

Nerve suppling the U/M/L Traps

A

U - CN XI
M - c3
L - C4

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5
Q

Action of the U/M/L Traps

A

U - elevation
M - Retraction
L - depression
ALL - upward rotation

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6
Q

O/I of the Levator Scap

A

O- transverse process of vert c1-4

I - superior angle + superior med boarder of scap

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7
Q

Nerve suppling the Levator Scap

A

dorsal snap nerve

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8
Q

action of levator scap

A

elevation, DR of scap

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9
Q

O/I of the serrated anterior

A

o - ribs 1-9

I - anterior middle border of scap

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10
Q

Nerve innervation of Serratus anterior

A

long thoracic nerve

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11
Q

Action of Serratus anterior

A

a - protraction and UR of scam

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12
Q

Reverse OI of serrated anterior (think handstand)

A

ROI - retracts trunk, elevate and depress trunk

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13
Q

O/I of pectorals minor

A

O - ribs 3-5

I - coracoid process

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14
Q

Nerve of the pec minor

A

medial pectoral nerve

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15
Q

action of pectorals minor

A

depressions, protraction, DR scapula

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16
Q

O/I/N of the subclavius muscle

A

O- 1st rib
I- inferior clavicle
N - C5, C6

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17
Q

Action of subclavius

A

Depress - protract clavicle

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18
Q

what muscles rotate the scapula upwards

A

Trapezius, Serratus Anterior

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19
Q

What muscles downwardly rotate the scapula

A

Levator scapulae, rhomboid minor, major, pectorals minor

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20
Q

O/I of the pectoral is major

A

O- medial clavicle, sternum, costal cartilage of ribs 1-7

I - lateral lip of bicipital groove on humerus

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21
Q

nerve enervation of pectoralis major

A

median and lateral pectoral nerve

22
Q

action of pec major

A

adduction, flexion, medial rotation or humerus

23
Q

O/I/N of the coracobrachialis

A

O- coracoid process of scap
I- medial shaft of humerus
N - musculocutaneous N

24
Q

Action of the coracobrachialis

A

Flexion adduction (GH)

25
Q

O/I/N of the deltoid m

A

O- lateral clavical, AP, spine of scapula
I- deltoid tuberosity if humerus
N - Axillary N

26
Q

Action of delts

A

ANT - abduction, flexion, Med rotation
Post - abduction, etension, LR
MID - abduction

27
Q

O/I of the latissimus doors

A

O- spinous process of vert T7-L5

I - medial floor of bicipital groove on humerus

28
Q

Nerve innervation of the Lat dorsi

A

n - thoracodorsal n

29
Q

Action of the Lat Dorsi

A

extension, adduction & MR of the humerus

30
Q

T/F Lat dorsi and Teres major have the same actions?

A

True

31
Q

O/I of the teres Major

A

O - inferior lateral border of scapula

I- medial ip of bicipital groove of humerus

32
Q

nerve innervating the teres Major

A

Lower subscapular nerve

33
Q

Action of the Teres major

A

MR, adduction, extension

34
Q

O/I/N of the teres minor

A

O - superior, lateral border of scap
I - lower facet of greater tuberosity
N - axillary nerve

35
Q

Action of teres minor

A

LR humerus

36
Q

O/I/N/A of supraspinatus

A

O - supraspinous fossa
I - upper facet go greater tubercle
N - suprascapular
A - abduction

37
Q

O/I/N/A of infraspinatus

A

O- middle facet of infraspinous fossa of scapula
I - Greater tubercle of humerus
N - Suprascapular
A - LR

38
Q

O/I of the subscapularis

A

O - sub scapular fossa

I - lesser tubercle of humerus

39
Q

Nerve innervation of subscapularis

A

N - upper/lower subscapular N

40
Q

Action of the subscapularis

A

MR - humerus

41
Q

O/I/ N of biceps brachii

A

O - LH - supraglenoid tubercle
SH - coracoid process
I - radial tuberosity
N - Musculocutaneous N

42
Q

Action of the biceps brachii

A

flex the arm at shoulder

Flexion and supination

43
Q

O/I Triceps brachii

A

LH- infraglenoid tubercle
LatH - proximal 1/3 of posterior humerus
MH - distal 2/3 of posterior humerus

I- olecranon process

44
Q

N/ Action of triceps brachii

A

N - radial N
A - LH - extension at GH joint
All - extend forearm @ elbow

45
Q

What M insert at the intertubicular grove

A

Pec major
Lat Dorsi
Teres major

46
Q

what do the rotator cuff muscles do

A

Keep head of humorous centred in the GH joint

47
Q

Where does the axillary nerve originate

A

C5-6

48
Q

what nerve(s) originate from C5-T1

A

median nerve, radial nerve

49
Q

where does the ulnar nerve originate from

A

C8-T1

50
Q

what muscles make up the Rotator cuff

A
  1. supraspinatus
  2. infraspinatus
  3. teres minor
  4. subscapularis

Functional Anatomy (7 decks)

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