True about deep palmar arch ?
Deep palmar archIt lies across the base of metacarpal bones. It is formed mainly by radial aery and completed by deep branch of ulnar aery. Its branches are :-Three palmar metacarpal aeries on the II, III and IV palmar interossei muscles to join the digital branches of superficial palmar arch.Three perforating aeries :- Anastomose with dorsal metacarpal aeries.Recurrent branches :- Supply carpal bones and join palmar carpal arch.The deep palmar arch lies deep to the oblique head of adductor pollicis, long flexor tendon and lumbrical muscles and passes across the base of metacarpal and interossei.
Main contribution is by ulnar aery
Lie superficial to lumbricals
Gives three perforating branches
Gives four palmar metacarpal aeries