Upper Limb 1 - Station 4

Question 1

what are the rotator cuff muscles

Answer 1

supraspinatus, infraspinatus, subscapularis and teres minor

Question 2

what type of joint is the glenohumeral joint

Answer 2

synovial ball and socket

Question 3

what structre goes around the rim of the glenoid cavity

Answer 3

glenoid labrum

Question 4

function of glenoid labrum

Answer 4

to deepen and stabilise the shoulder joint

Question 5

where is the radial groove

Answer 5

on the middle of the posterior of the humerus

Question 6

ligament between coracoid process and acromion

Answer 6

coraco-acromial ligament

Question 7

function of coraco-acromial ligament

Answer 7

to strengthen the superior aspect of the joint capsule

Question 8

structures that make up the coraco-acromial arch

Answer 8

coraciod, acromion and coraco-acromial ligamnent

Question 9

function of the corao-acromial ligament

Answer 9

prevent superior displacement of the humeral head

Question 10

which direction of dislocation is most common of hte shoulder

Answer 10

anterior

Question 11

what bursa communicates with the shoulder joint capsule

Answer 11

subscapular

Question 12

name two burase of the shoulder

Answer 12

subscapular and subacromial

Question 13

role of the subacromial bursae

Answer 13

to reduce friction between the acromion and humerus

Question 14

what type of movements may cause subacromial bursitis

Answer 14

repetitive movements overhead

Question 15

action of the rotator cuff muscles

Answer 15

supraspinatus - abduction
infraspinatus and teres minor - lateral rotation
subscapularis - medial rotation and adduction

Question 16

important role of rotator cuff muscles

Answer 16

holding the humeral head in the glenoid cavity

Question 17

intrinsic shoulder muscles

Answer 17

deltoid, supraspinatous, infraspinatous, teres major, teres minor and subscapularis

Question 18

action of the deltoid

Answer 18

3 portions:
anterior - flexion and medial rotation
middle - abduction
posterior - extension and lateral rotation

Question 19

innervation of the deltoid

Answer 19

axillary nerve

Question 20

what cord does the axillary nerve arise from

Answer 20

posterior cord

Question 21

attachments of the deltoid

Answer 21

clavicle, acromion and spine of the scapula –> deltoid tuberosity of the humerus

Question 22

which rotator cuff muscle is also innervated by the axillary nerve

Answer 22

teres minor

Question 23

2 intrinsic shoulder muscles innervated by the suprascapular nerve

Answer 23

supraspinatus and infraspinatus

Question 24

2 intrinsic shoulder muscles innervated by branches of the subscapular nerve

Answer 24

subscapularis and teres major

Question 25

innervation of the intrinsic shoulder muscles

Answer 25

``` deltoid - axillary teres minor - axillary teres major - subscapular subscapularis - subscapular supraspinatus - suprascapular infraspinatus - suprascapula ```

Question 26

what nerve is commonly injured in shoulder dislocation

Answer 26

dislocation

Question 27

where do you test for sensation of axillary nerve

Answer 27

regimental badge area

Question 28

medial attachment of pectoralis major

Answer 28

sternum, ribs and medial 3rd of the clavicle

Question 29

action of pectoralis major on shoulder

Answer 29

adduct, flex and medially rotate

Question 30

the cephalic vein is in what shoulder triangle

Answer 30

the deltopectoral triangle

Question 31

nerve supply of the serratus anterior

Answer 31

long thoracic

Question 32

key muscle of stabilising the scapula during limb movements

Answer 32

serratus anterior

Question 33

winging of the scapula happens when what nerve is damaged

Answer 33

the long thoracic

Question 34

action of the trapezius

Answer 34

superior - elevate middle - retract inferior - depress

Question 35

lateral attachment of trapezius

Answer 35

acromion, clavicle and spine of the scapula

Question 36

innervation of the trapezius

Answer 36

spinal accessory nerve (XI)

Question 37

actions of teres major

Answer 37

medially rotate and adduct

Question 38

actions of latimus dorsi

Answer 38

extens, adducts and medially rotate