Anatomy: Upper Limb

List the four muscles that comprise the rotator cuff.

Supraspinatus, Infraspinatus, Teres minor, and Subscapularis.

Which nerve is damaged if a patient presents with 'wrist drop'?

Radial nerve.

Name the eight carpal bones of the wrist in order from proximal to distal, lateral to medial.

Scaphoid, Lunate, Triquetrum, Pisiform, Trapezium, Trapezoid, Capitate, and Hamate.

Which nerve is commonly compressed in carpal tunnel syndrome?

Median nerve.

What are the spinal roots that form the brachial plexus?

C5, C6, C7, C8, and T1.

Which muscle is the primary initiator of arm abduction for the first 15 degrees?

Supraspinatus.

What are the contents of the cubital fossa from medial to lateral?

Median nerve, Brachial artery, Biceps tendon, and Radial nerve.

Which nerve innervates the muscles of the anterior compartment of the arm (Biceps brachii, Brachialis, Coracobrachialis)?

Musculocutaneous nerve.

A fracture of the surgical neck of the humerus most likely damages which nerve and artery pair?

Axillary nerve and Posterior circumflex humeral artery.

What structure forms the floor of the anatomical snuffbox?

Scaphoid bone (and the Trapezium).