VAN 121: Veterinary Gross Anatomy-II (2+2)

COLLATERAL RADIAL ARTERY

• It is a large vessel which arises from the lateral face of the brachial artery at its lower most part, runs outwards and downwards in company with the musculocutaneous branch of the median nerve under the lower part of the biceps and divides into superficial and deep branches.
• The former runs forwards in company with the cutaneous division of the musculocutaneous branch of the median nerve as cutaneous vessel.
• The deep branch gets under the brachialis passes over the capsular ligament of the elbow and passes under the extensor carpi radialis.
• It passes successively under the origin of these extensor muscles and finally terminates in the ulnaris lateralis.
• It supplies all the extensors and the ulnaris lateralis.
• It gives a muscular branch to the biceps at its lower part.