True/False from Arm/Cubital Fossa learning objectives

Comments:
: 1. The pectoralis major crosses the transverse humeral ligament prior to inserting on the lateral lip of the intertubercular sulcus (bicipital groove). : False – inserts inferior to transverse humeral ligament : 2. The brachialis acts only at the elbow. It is a monoarticular muscle. : True – only crosses elbow joint : 3. The radial collateral artery, within the cubital fossa, is between the ulnar head of pronator teres and the medial border of the brachialis. : False – radial collateral artery is not in the fossa : 4. The radial collateral artery travels through the medial head of the triceps and forms an anastomosis with the interosseus recurrent artery. : False – middle collateral anastamosis with interosseus recurrent : 5. The posterior ulnar recurrent artery passes between the heads of origin of the flexor carpi ulnaris. : True : 6. The brachial artery crosses the median nerve on the anterior side of the median nerve. (hint: what is the relation of the medial cord to the axillary artery) : False – brachial artery crosses posterior to median nerve : 7. Within the cubital fossa the median nerve lies medial to the brachial artery. : True : 8. The median cubital vein crosses the posterior (deep) surface of the bicipital aponeurosis. : False – it is superficial to the aponeurosis : 9. Generally, it is within the cubital fossa that the radial artery terminates into superficial and deep branches. : False – the radial artery continues down to the hand : 10. The radial recurrent artery is, in part, within the cubital fossa. : True – class notes classify it as additional contents of fossa : 11. The ulnar head of the pronator teres takes origin from the coronoid process. : True : 12. The biceps tendon inserts on the tuberosity of the ulna. : False – it inserts on the radial tuberosity : 13. The brachialis inserts on the radial tuberosity. : False – it inserts on the ulnar tuberosity : 14. Fexion and supination at the elbow are syngergistic actions of the biceps. : True : 15. The superior ulnar collateral artery passes posterior the medial epicondyle of the humerus. : False - ? I don’t think it passes the medial epicondyle. I think it anatamoses with the inferior ulnar collateral and the anterior and posterior ulnar recurrents posterior to the medial epicondyle. It is unclear where one artery ends and the other begins. Therefore, I’m not sure how to answer. It also depends on the definition of pass. Does that mean pass from arm to forarm or pass from a medial to lateral position? : 16. The musculocutaneous nerve pierces the short head of the biceps upon entering the arm. : False – pierces the coracobrachialis : 17. The lateral antebrachial cutaneous nerve can be found in the cubital fossa. : False – per class notes, not in fossa : 18. The radial nerve passes posterior to the superior free edge of the teres major to enter into the triangular interval. : False – it passes inferior to the inferior free edge to enter the triangular interval : 19. The inferior ulnar collateral artery converges with the unlar nerve at the anterior region of the lateral humeral epicondyle. : False – both structures are medial : 20. The coracobrachialis and the short head of the biceps are both biarticulate and have a common site of origin. : False – They share a common site of origin – the corocoid prosess. However, coracobrachialis is not biarticulat.

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