platysma muscle


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Related to platysma muscle: Scalene muscles, Strap muscles, Cervical muscles

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 muscle

Neck and facial muscle. Origin: superficial fascia of upper chest. Insertion: skin of lower face. Nerve: facial (CN VII). Action: lowers jaw, widens neck.
See: face and headfor illus.
See also: muscle

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] .
References in periodicals archive ?
Blood supply to the platysma muscle flap: An anatomic study with clinical correlation.
With the patient under general anesthesia, a horizontal submental incision was made just superior to the hyoid bone through subcutaneous tissues and platysma muscle.
Platysma muscle cervical fascia stemocleidomastoid muscle (PCS) flap for parotidectomy.
The lower part is covered by skin, subcutaneous tissue, platysma muscle, and an investing layer of deep cervical fascia.
Only five IPEH patients have been reported to have an anterior neck mass; one was in the external jugular vein, [17] one in the vasculature beneath the platysma muscle, [18] and three in organizing hematomas of the thyroid gland.
INTRODUCTION: Reconstruction of moderate post excisional defects of angle of the mouth and adjacent lips with flaps taken from the nasolabial, lower cheek and the submandibular regions give better cosmetic and functional results than reconstructions with distant flaps as the sphincter function can also be restored using zygomaticus and platysma muscles.
During the sixth and seventh weeks following fertilization, the frontal, auricular, occipital, and platysma muscles are derived from the primordial superficial muscle sheet.