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the elevator muscle group that includes the procerus muscle and the levator labii superioris alaeque nasi muscle. the depressor muscle group that includes the alar nasalis muscle and the depressor septi nasi muscle. the compressor muscle group that includes the transverse nasalis muscle. the dilator muscle group which consists of the dilator naris muscle that broadens the nostrils; it remains in 2 parts: (i) the dilator nasi anterior muscle, and (ii) the dilator nasi posterior muscle.
B. This Author of the nose nasal subunits and nasal sectors [modify] To plan, map, and execute the surgical correction of a nasal defect or deformity, the structure of the external nose is divided into 9 visual nasal subunits, and 6 visual nasal segments, which provide the cosmetic surgeon with the procedures for figuring out the size, extent, and topographic location of the nasal flaw or deformity.
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the dorsal nasal section the lateral nasal-wall segments the hemi-lobule section the soft-tissue triangle sections the alar segments the columellar segment Rhinoplasty: The Common carotid artery. Utilizing the co-ordinates of the subunits and segments to identify the topographic area of the flaw on the nose, the cosmetic surgeon strategies, maps, and executes a rhinoplasty procedure.
Thus, if more than half of a visual subunit is lost (damaged, faulty, destroyed) the surgeon replaces the entire visual section, normally with a regional tissue graft, harvested from either the face or the head, or with a tissue graft collected from in other places on the patient's body. C. Nasal blood supply arteries and veins [modify] Like the face, the human nose is well vascularized with arteries and veins, and hence supplied with plentiful blood.
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The external nose is provided with blood by the facial artery, which becomes the angular artery that courses over the superomedial element of the nose. The sellar area (sella turcica, "Turkish chair") and the dorsal region of the nose are supplied with blood by branches of the internal maxillary artery (infraorbital artery) and the ophthalmic arteries that stem from the internal common carotid artery system.