palmar arch

noun

: either of two loops of blood vessels in the palm of the hand:
a
: a deeply situated transverse artery that is composed of the terminal part of the radial artery joined to a branch of the ulnar artery and that supplies principally the deep muscles of the hand, thumb, and index finger

called also deep palmar arch

b
: a superficial arch that is the continuation of the ulnar artery which anastomoses with a branch derived from the radial artery and that sends branches mostly to the fingers

called also superficial palmar arch

Dictionary Entries Near palmar arch

Cite this Entry

“Palmar arch.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/palmar%20arch. Accessed 23 Jun. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!