innervated by innervated_by ulnar nerve interosseous muscle of manus palmar interosseous muscle of manus http://upload.wikimedia.org/wikipedia/commons/3/39/Gray429.png palmar interosseous muscle of hand FMA:37419 musculi interossei palmares UMLS:C1709453 musculi interossei palmares palmar hand interosseus muscle palmar interosseous of hand EMAPA:37520 Any of three muscles, the first with its origin from the second metacarpal, and the second and the third with origin from the fourth and fifth metacarpals; the first with insertion into the index finger, and the second and the third with insertion into the ring and little fingers; with nerve supply from the ulnar nerve, and whose action adducts the fingers toward the axis of the middle finger. Wikipedia:Palmar_interossei_muscles UBERON:0006505 MA:0002315 NCIT:C52704