0 a wide sheet of muscle covering the face and neck that wrinkles the skin of the neck and closes the jaw
It is a potential space located between the mylohyoid muscle superiorly, the platysma muscle inferiorly, under the chin in the midline.
This is because the different branches innervate the frontalis muscle, orbicularis oculi and oris muscles, lip elevators and depressors, and the platysma.
The buccal space is superficial to the buccinator muscle and deep to the platysma muscle and the skin.
These consist of sternocleidomastoid, platysma, and the scalene muscles of the neck.
It is a potential space, bilaterally located in the chin, between the mentalis muscle superiorly and the platysma muscle inferiorly.
It contains the platysma, cutaneous nerves, blood, and lymphatic vessels.
Some patients may experience excessive tongue protrusion, squinting, light sensitivity, muddled speech, or uncontrollable contraction of the platysma muscle.
The platysma-cutaneous ligaments and the platysma-auricular ligament are aponeurotic condensations which connect the platysma to the dermis.
