Question

fill in the blank question
blood from the hand drains in the veins, which drain into the and ulnar veins; which in turn merge to form the veins.
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Explanation:

Blood from the hand first drains into the palmar veins. These palmar veins then drain into the radial and ulnar veins. The radial and ulnar veins merge to form the brachial veins. This is based on the knowledge of human venous - circulation anatomy.

Answer:

palmar; radial; brachial