origin - ulnainsertion - palmar arch medial four digitsinnervation - ulnar nerve and medial nerveblood supply - anterior interosseous artery, ulnar arteryaction - flex DIP, flex hand at wrist

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1.
origin - ulna

insertion - palmar arch medial four digits

innervation - ulnar nerve and medial nerve

blood supply - anterior interosseous artery, ulnar artery

action - flex DIP, flex hand at wrist