- May 6, 2026The lateral head is the most prominent and superficially visible triceps component. Its origin above the spiral groove means its…
- May 6, 2026Coracobrachialis is the primary coracoid-to-arm connector. The musculocutaneous nerve penetrates its substance, making it the key muscle to identify when…
- May 6, 2026The long head has the longest course of any upper arm tendon, traversing the glenohumeral joint intra-articularly before entering the…
- May 6, 2026The long head is the only head with a scapular origin, making it a two-joint muscle. Its infraglenoid origin is…
- May 2, 2026The posterior interosseous recurrent artery ascends from the posterior interosseous artery in the forearm to anastomose with the inferior lateral…
- May 2, 2026The posterior circumflex humeral vein accompanies the posterior circumflex humeral artery through the quadrilateral space, draining the posterior shoulder and…
- May 2, 2026The median basilic perforating vein connects the deep brachial veins to the basilic vein at the medial upper arm through…
- May 2, 2026The brachial artery bifurcates into the radial and ulnar arteries at the level of the radial neck in the antecubital…
- May 2, 2026The brachial artery gives multiple small muscular branches to the biceps, brachialis, coracobrachialis, and triceps as it descends the medial…
- May 2, 2026A communicating vein connecting the cephalic and basilic veins in the upper arm, variable in position but most commonly crossing…