Anatomy Lecture 12_Upper Limb innervation and Blood Supply

Question 1

What nerves innervate the Subscapularis

Answer 1

Upper and Lower Subscapular N.

Question 2

What nerve innervates the Teres Major

Answer 2

Lower Subscapular N.

Question 3

What are the abductors of the arm?

Answer 3

Deltoid Supraspinatus

Question 4

What are the rotators of the scapula?

Answer 4

Serratus anterior Trapezius

Question 5

What are the boarders of the Quadrangular Space. What passes through it?

Answer 5

Lateral border –humerus Medial border –long head of triceps brachii Superior border –teres minor Inferiorly –teres major axillary nerve and posterior humeral circumflex artery

Question 6

What are the boarders of the Triangular Interval. What passes through it?

Answer 6

Lateral border –lateral head of the triceps Medial border –long head of the triceps Superior border –teres major Contents: the radial nerve and deep brachial artery

Question 7

What are the boarders of the Triangular Space. What passes through it?

Answer 7

Contents: the scapular circumflex artery Lateral border –long head of the triceps Superior border –teres minor Inferior border –teres major

Question 8

What causes carpal tunnel syndrome?

Answer 8

inflamation of the median nerve

Question 9

Describe the branching of the arteries of the upper limb

Answer 9

see attached

Question 10

How do you test for anastemosis between the ulnar and radial arteries (Allen’s Test)?

Answer 10

• Test for collateral circulation between the Ulnar and Radial Arteries
• Pinch off both arteries at wrist
• Make a fist several times to remove blood
• Let go of the ulnar artery while keeping pressure on radial
• See if blood flow reaches entire hand