The palmar metacarpal arteries arise from the convexity of the deep palmar arch.

[1] They run distally upon the palmar interossei muscles.

They anastomose at the clefts of the fingers with the common palmar digital arteries which arise from the superficial palmar arch.

[1] This article incorporates text in the public domain from page 595 of the 20th edition of Gray's Anatomy (1918)

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