Posterior apertures

Question 1

What are the boundaries of the supra scapular notch and what runs through it?

Answer 1

boundaries: suprascapular ligament spine of scapula contents BENEATH suprascapular lig.: suprascapular nerve - from brachial plexus contents ABOVE supra scapular ligament: suprascapular artery - from subclavian artery

Question 2

What are the posterior apertures?

Answer 2

suprascapular notch triangular interval quadrangular space triangular space

Question 3

What are the boundaries and contents of quadrangular space?

Answer 3

boundaries: lateral - surgical neck of humerus medial - long head triceps superior - teres minor, subscapularis, capsule of shoulder joint inferior - teres major contents: posterior circumflex humeral artery, axillary nerve

Question 4

What are the boundaries and contents of triangular space?

Answer 4

boundaries: lateral - long head triceps superior - teres minor inferior - teres major contents: circumflex scapular artery

Question 5

What are the boundaries and contents of the triangular interval (between anterior and posterior of arm)?

Answer 5

boundaries: lateral - shaft of humerus medial - long head triceps superior - teres major contents: radial nerve, profunda brachii vessels