Shoulder

Question 1

What is the insertion of deltoid?

Answer 1

Deltoid tubersity of the humerus

Question 2

What is the origin of deltoid (ant. to post.)

Answer 2

Anterior, lateral 1/3 of clavical, lateral margin of the acromion, inferior edge of the spine of the scapula

Question 3

What is the innervation of the deltoid?

Answer 3

Axillary nerve (C5, C6)

Question 4

What is the blood supply of the deltoid?

Answer 4

Posterior circumflex humoral artery

Question 5

What is the contents of the quadrangular space?

Answer 5

Posterior circumflex artery/ vein and axillary nerve

Question 6

What is the action of the deltoid?

Answer 6

Abduction beyond 15 degrees from supraspinatus, anterior fibres help in flexing the arm, posterior fibres help in extending the arm

Question 7

What is the pathway of the posterior circumflex artery?

Answer 7

Aorta, (brachiocephalic trunk), subclavian artery, axillary artery, posterior circumflex

Question 8

What is the origin of the long head of triceps brachii?

Answer 8

Infraglenoid tubercle of the scapula

Question 9

What is the origin of the lateral head of triceps brachii?

Answer 9

Superior to the radial groove

Question 10

What is the origin of the medial head of the triceps brachii?

Answer 10

Inferior to the radia groove

Question 11

What spinal nerve does a triceps tap test?

Answer 11

C7, long head by axillary nerve

Question 12

What is the insertion of the triceps brachii?

Answer 12

Olecranon

Question 13

What is the action of triceps brachii?

Answer 13

Extension of the forearm, long head extends and adducts the arm

Question 14

What does the triangular interval contain?

Answer 14

Profunda brachial artery, radial nerve

Question 15

What are the borders of the triangular interval?

Answer 15

Teres major, long head of triceps, humerus

Question 16

What are the borders of the triangular space?

Answer 16

Teres minor, teres major, long head of triceps

Question 17

What are the contents of the triangular space?

Answer 17

Circumflex scapular artery and vein

Question 18

Where does the radial nerve bifurcate into the superficial and deep branches?

Answer 18

Antecubital fossa

Question 19

What are the borders of the quadrangular space?

Answer 19

Teres minor, teres major, long head of the triceps, humerus

Question 20

Where does supraspinatus insert?

Answer 20

Superior portion of the greater tubercle

Question 21

Where does infraspinatus insert?

Answer 21

Middle portion of the greater tubercle

Question 22

Where does teres minor insert?

Answer 22

Inferior portion of the greater tubercle

Question 23

Where does subscapularis insert?

Answer 23

Lesser tubercle

Question 24

Where does teres minor originate?

Answer 24

Lateral border of the scapula

Question 25

What is the innervation of supraspinatus and infraspinatus?

Answer 25

Suprascapular nerve (C5-C6)

Question 26

What is the blood supply of supraspinatus?

Answer 26

Suprascapular artery

Question 27

What is the blood supply of infraspinatus?

Answer 27

Suprascapular artery and circumflex scapular artery

Question 28

What passes through the scapular notch?

Answer 28

Suprascapular nerve (artery above)

Question 29

What forms the axillary vein?

Answer 29

Brachial vein and basilic vein

Question 30

What are the branches of the axillary artery?

Answer 30

Superior thoracic artery, Lateral thoracic artery, posterior and anterior circumflex humoral artery, thoracodorsal artery, subscapular artery, circumflex scapular artery

Question 31

What is the origin of the suprascapular artery?

Answer 31

Thyrocervical trunk

Question 32

Where does the axillary artery begin?

Answer 32

Lateral border of the first rib