Pectoral Girdle muscles

Question 1

Origin and insertion of the UPPER Trapezius

Answer 1

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

Question 2

Origin and insertion of the MIDDLE Trapezius

Answer 2

o - T1-5

I - AP, scapular spine

Question 3

Origin and insertion of the LOWER Trapezius

Answer 3

o - T6-12

I - Root of spine

Question 4

Nerve suppling the U/M/L Traps

Answer 4

U - CN XI
M - c3
L - C4

Question 5

Action of the U/M/L Traps

Answer 5

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

Question 6

O/I of the Levator Scap

Answer 6

O- transverse process of vert c1-4

I - superior angle + superior med boarder of scap

Question 7

Nerve suppling the Levator Scap

Answer 7

dorsal snap nerve

Question 8

action of levator scap

Answer 8

elevation, DR of scap

Question 9

O/I of the serrated anterior

Answer 9

o - ribs 1-9

I - anterior middle border of scap

Question 10

Nerve innervation of Serratus anterior

Answer 10

long thoracic nerve

Question 11

Action of Serratus anterior

Answer 11

a - protraction and UR of scam

Question 12

Reverse OI of serrated anterior (think handstand)

Answer 12

ROI - retracts trunk, elevate and depress trunk

Question 13

O/I of pectorals minor

Answer 13

O - ribs 3-5

I - coracoid process

Question 14

Nerve of the pec minor

Answer 14

medial pectoral nerve

Question 15

action of pectorals minor

Answer 15

depressions, protraction, DR scapula

Question 16

O/I/N of the subclavius muscle

Answer 16

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

Question 17

Action of subclavius

Answer 17

Depress - protract clavicle

Question 18

what muscles rotate the scapula upwards

Answer 18

Trapezius, Serratus Anterior

Question 19

What muscles downwardly rotate the scapula

Answer 19

Levator scapulae, rhomboid minor, major, pectorals minor

Question 20

O/I of the pectoral is major

Answer 20

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

I - lateral lip of bicipital groove on humerus

Question 21

nerve enervation of pectoralis major

Answer 21

median and lateral pectoral nerve

Question 22

action of pec major

Answer 22

adduction, flexion, medial rotation or humerus

Question 23

O/I/N of the coracobrachialis

Answer 23

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

Question 24

Action of the coracobrachialis

Answer 24

Flexion adduction (GH)

Question 25

O/I/N of the deltoid m

Answer 25

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

Question 26

Action of delts

Answer 26

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

Question 27

O/I of the latissimus doors

Answer 27

O- spinous process of vert T7-L5 | I - medial floor of bicipital groove on humerus

Question 28

Nerve innervation of the Lat dorsi

Answer 28

n - thoracodorsal n

Question 29

Action of the Lat Dorsi

Answer 29

extension, adduction & MR of the humerus

Question 30

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

Answer 30

True

Question 31

O/I of the teres Major

Answer 31

O - inferior lateral border of scapula | I- medial ip of bicipital groove of humerus

Question 32

nerve innervating the teres Major

Answer 32

Lower subscapular nerve

Question 33

Action of the Teres major

Answer 33

MR, adduction, extension

Question 34

O/I/N of the teres minor

Answer 34

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

Question 35

Action of teres minor

Answer 35

LR humerus

Question 36

O/I/N/A of supraspinatus

Answer 36

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

Question 37

O/I/N/A of infraspinatus

Answer 37

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

Question 38

O/I of the subscapularis

Answer 38

O - sub scapular fossa | I - lesser tubercle of humerus

Question 39

Nerve innervation of subscapularis

Answer 39

N - upper/lower subscapular N

Question 40

Action of the subscapularis

Answer 40

MR - humerus

Question 41

O/I/ N of biceps brachii

Answer 41

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

Question 42

Action of the biceps brachii

Answer 42

flex the arm at shoulder | Flexion and supination

Question 43

O/I Triceps brachii

Answer 43

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

Question 44

N/ Action of triceps brachii

Answer 44

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

Question 45

What M insert at the intertubicular grove

Answer 45

Pec major Lat Dorsi Teres major

Question 46

what do the rotator cuff muscles do

Answer 46

Keep head of humorous centred in the GH joint

Question 47

Where does the axillary nerve originate

Answer 47

C5-6

Question 48

what nerve(s) originate from C5-T1

Answer 48

median nerve, radial nerve

Question 49

where does the ulnar nerve originate from

Answer 49

C8-T1

Question 50

what muscles make up the Rotator cuff

Answer 50

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