It is called the cubital fossa.

The cubital fossa is located in front of the elbow joint. It is a triangular fossa. The lateral boundary is the brachioradialis muscle. The medial side is the pronator teres muscle. The upper boundary is the line between the medial and lateral epicondyle of the humerus. The fossa is The main internal structures include the biceps tendon from outside to inside, the brachial artery and its branches, and the median nerve.

Content

The biceps brachii tendon is located on the radial side, with the brachial artery, two accompanying veins, radial and ulnar vessels on the ulnar side, and the median nerve on the ulnar side. The deep cubital lymph nodes are located at the bifurcation of the brachial artery. The brachial artery divides into the radial and ulnar arteries at about the level of the radial neck. The radial artery crosses the surface of the biceps tendon and goes obliquely outward and downward to the medial side of the brachioradialis muscle of the forearm; the ulnar artery passes deep to the ulnar head of the pronator teres muscle to the deep side of the flexor carpi ulnaris of the forearm.

The median nerve crosses in front of the ulnar blood vessel, passes between the two heads of the pronator teres muscle, and enters deep to the flexor digitorum superficialis muscle. The radial nerve is located deep to the brachialis muscle on the lateral side of the cubital fossa to the lateral side of the radial artery in the forearm; its deep branch penetrates the supinator muscle to the posterior area of ??the forearm and is renamed the posterior interosseous nerve. The lateral cutaneous nerve of the forearm pierces the deep fascia lateral to the biceps tendon.

Reference for the above content? Baidu Encyclopedia-cubital fossa