Another area of importance of the platysma lies in plastic surgery. At its origin, depressor labii is continuous with the fibers of the platysma muscle. It contains the platysma, cutaneous nerves, blood, and lymphatic vessels. The two main integumentary muscles of a cat are the "platysma" and the "cutaneous maximus". The platysma is a superficial muscle that overlaps the sternocleidomastoid. The platysma is vulnerable to neck injuries that may penetrate it. The platysma is innervated by cervical branch of the facial nerve. The platysma is supplied by branches of the Submental artery and Suprascapular artery.