platysma


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Related to platysma: sternocleidomastoid

platysma

 [plah-tiz´mah]
a subcutaneous neck muscle extending from the neck to the clavicle, acting to wrinkle the skin of the neck and to depress the jaw. See Appendix 3-4.

pla·tys·ma (mus·cle)

[TA]
facial muscle in neck region; origin, subcutaneous layer and fascia covering pectoralis major and deltoid at level of first or second rib; insertion, lower border of mandible, risorius and platysma of opposite side; action, depresses lower lip, forms ridges in skin of neck and upper chest when jaws are "clenched", denoting stress, anger; nerve supply, cervical branch of facial.

platysma

/pla·tys·ma/ (plah-tiz´mah) a platelike muscle that originates from the fascia of the cervical region and inserts in the mandible and the skin around the mouth. It wrinkles the skin of the neck and depresses the jaw.

platysma

[plətiz′mə]
Etymology: Gk, platys, broad
one of a pair of platelike, wide muscles at the side of the neck. It arises from the fascia covering the superior parts of the pectoralis major and the deltoideus, crosses the clavicle, and rises obliquely and medially along the side of the neck. The platysma covers the external jugular vein as the vein descends from the angle of the mandible to the clavicle. The platysma is innervated by the cervical branch of the facial nerve and serves to draw down the lower lip and the corner of the mouth. When the platysma fully contracts, the skin over the clavicle is drawn toward the mandible, increasing the diameter of the neck.

pla·tys·ma mus·cle

(plă-tiz'mă mŭs'ĕl)
Origin, subcutaneous layer and fascia covering pectoralis major and deltoid at level of first or second rib; insertion, lower border of mandible, risorius, and platysma of opposite side; action, depresses lower lip, forms ridges in skin of neck and upper chest when jaws are "clenched," denoting stress, anger; nerve supply, cervical branch of facial.
Synonym(s): platysma [TA] .

platysma

The broad, flat muscle lying immediately under the skin of the neck, from the shoulders to the point of the chin. The action of the platysma is to tighten the skin of the neck, pull down the corners of the mouth and lower the jaw.

pla·tys·ma mus·cle

(plă-tiz'mă mŭs'ĕl)
Origin, subcutaneous layer and fascia covering pectoralis major and deltoid at level of first or second rib; insertion, lower border of mandible, risorius, and platysma of opposite side; action, depresses lower lip, forms ridges in skin of neck and upper chest when jaws are "clenched," denoting stress, anger; nerve supply, cervical branch of facial.
Synonym(s): platysma [TA] .

platysma

the superficial sheet of cutaneous muscle over the face and neck.
References in periodicals archive ?
The skin, subcutaneous tissue, platysma and SCM were reflected laterally to expose the posterior triangle, noting the insertions of the SCM for reference.
This finding is frequently associated with streaky changes in the adjacent subcutaneous fat and thickening of the overlying platysma muscle.
lens thyroid cell glomeruli skin alveoli tonsil oculus limb mandible lung tricuspid ulna cerumen thumb esophagus molar talus vein glottis spine jejunum throat epiglottis muscles mitochondrion kidneys coccyx retina hypothalamus triceps sebum sternum thalamus spleen metacarpals keratin phalanges sacrum insula femur intercilium platelets xiphoid arteries calcaneus knuckle peroneus incisor epicondyle intestine diencephalon tibia brachioradialis epidermis thyrohyoideum cartilage cholangioles vertebra platysma chromosomes gastrocnemius cornea acetabulum dendrites laryngopharynx melanin sternocleidomastoid capillaries genioglossus bronchi glossopharyngeum diaphragm olecranon abdomen pterygopalatine larynx coracobrachialis trachea iliopsoas
This grade is characterized by black skin, crepitus, exposed dermis, and platysma.
Ludwig angina will appear as a diffuse swelling of the soft tissue of the floor of the mouth with adjacent subcutaneous fat stranding, and thickening of the platysma with gas or pus formation.
An incision was then made through the skin and the platysma muscle in the left submandibular area, exposing the superficial layer of the deep fascia.
29) Terzis and Kalantarian advocated dynamic restoration of lip depressor function with a digastric and/or platysma muscle transfer.
A retrospective study was conducted to assess outcomes of reconstruction of the oral cavity with the platysma myocutaneous flap, in terms of flap survival, complications, and quality of life.
A 23-mm mass was noted in the left submandibular region, pushing the submandibular salivary gland and platysma muscle (figure 1).
The flaps were cut to include skin, subcutaneous tissue, and platysma to prevent platysmal bands from creating a tethering effect.
Another reconstruction technique involves the use of a flap made up of three elements: platysma muscle, cervical fascia, and sternocleidomastoid muscle (PCS).