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Topic: Infrahyoid

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Suprahyoid

Omohyoid muscle

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	Infrahyoid - Wikipedia, the free encyclopedia
		The term infrahyoid refers to the region below (inferior) to the hyoid bone in the neck.
		The infrahyoid muscles are a group of four pairs of muscles in the anterior part of the neck, namely the sternothyroid, sternohyoid, thyrohyoid and omohyoid muscles.
		All of the infrahyoid muscles are innervated by the ansa cervicalis.
	en.wikipedia.org /wiki/Infrahyoid (199 words)

	CHAPTER 50: THE NECK
		All the fibers to the infrahyoid muscles are derived ultimately from cervical nerves l-3.
		The lateral surface is covered by infrahyoid muscles; the medial surface is related to the larynx, pharynx, trachea, and esophagus; the posterior surface (fig.
		50-11) arises in the carotid triangle, descends deep to the infrahyoid muscles to enter the apex of the corresponding lobe of the thyroid gland, where it divides into glandular branches.
	www.dartmouth.edu /~humananatomy/part_8/chapter_50.html (9365 words)

	Conservative Laryngectomy: Supracricoid and Supraglottic(Apr.1996)
		The infrahyoid strap muscles are separated from the hyoid and thyroid cartilage.
		If the tumor is on the infrahyoid epiglottis the entrance may be through the vallecula, if suprahyoid the pyriform opposite is the entrance site.
		Most infrahyoid lesions require division across the lesion with the first excision similar to the suprahyoid lesion and the remainder is removed similar to mapping a Moh’s excision.
	www.utmb.edu /otoref/grnds/conslars.htm (4015 words)

	Anatomy & Physiology of the Larynx
		The extrinsic muscles are described as such because they attach to a site within the larynx and to a site outside of the larynx (such as the hyoid bone, jaw, etc.).
		The infrahyoid group includes the sternothyroid, sternohyoid, thyrohyoid, and omohyoid muscles.
		The infrahyoid extrinsic laryngeal muscles work together to lower the hyoid bone and larynx.
	www.gbmc.org /voice/anatomyphysiologyofthelarynx.cfm (722 words)

	IngentaConnect Metastatic prostate cancer presenting with hoarseness (Site not responding. Last check: 2007-10-22)
		We present a case of metastatic prostate adenocarcinoma to the left infrahyoid neck compressing the larynx resulting in hoarseness.
		The patient is a 65-year-old male with hoarseness and a left infrahyoid prostate metastases measuring 8 by 10 cm, effacing the left pyrifom sinus and shifting the true and false vocal cords to the right of midline, with cord morphology and mobility maintained.
		We present a case of hoarseness resulting from displacement of the larynx from infrahyoid metastases, which resolved after reduction in size of the metastases with radiation therapy.
	www.ingentaconnect.com /content/emed/gr/2005/00000005/00000001/050006 (276 words)

	ANNALS Jan1999: TRANSVERSE INFRAHYOID APPROACH TO BILATERAL GLOTTIC TUMORS
		Although this approach is generally satisfactory for the resection of unilateral vocal cord lesions, it may be unsafe in cases in which tumors extend across the midline and/or subglottically.
		In these instances, we prefer the superior transverse infrahyoid approach to the glottis, which transects the petiole of the epiglottis and reflects the contents of the preepiglottic space posterior and superior.
		In none of the cases in which it has been employed was there a positive surgical margin.
	www.annals.com /abs/annals303.htm (158 words)

	Table of Contents
		Surface electromyography (EMG) at 3 sites—the orbicularis oris inferior region, submental muscle region, and infrahyoid muscle region—were included in the study.Results revealed that the start of submental muscle activation was significantly later in older participants than in younger participants.
		A more pronounced effect of taste was manifested as earlier submental or infrahyoid muscle activation when the three tastants were added to a thicker consistency.
		Interaction of taste, consistency, and age was also noted for onset time at the submental and infrahyoid sites.
	www.asha.org /about/publications/journal-abstracts/jslhr/46/04?articleabstract=977 (346 words)

	Anatomy: Muscles (Site not responding. Last check: 2007-10-22)
		(which can also be divided into two subgroups: the infrahyoid and the suprahyoid).
		The infrahyoid subgroup contains omohyoid, sternohyoid, sternothyroid, thyrohyoid muscles, whereas the suprahyoid subgroup (which is not strictly laryngeal) contains digastric, geniohyoid, mylohyoid, stylohyoid, stylopharyngeus, and thyrohyoid muscles.
		The extrinsic muscles, also called the strap muscles, are capable of moving the larynx up or down during deglutition, respiration and phonation.
	sprojects.mmi.mcgill.ca /Larynx/notes/anat/namusc.htm (147 words)

	UAMS Department of Anatomy - Lymphatics Tables
		of the anterior infrahyoid region of the neck
		anterior jugular nodes are located between the superficial layer of deep cervical fascia and the infrahyoid mm.
		four groups of juxtavisceral nodes are recognized: infrahyoid, prelaryngeal, pretracheal and paratracheal
	anatomy.uams.edu /AnatomyHTML/lymph_alpha.html (4289 words)

	Feeding and swallowing
		Action in the infrahyoid muscles depresses the hyoid bone.
		Infrahyoid muscles connect, in turn, to the thyroid and cricoid cartilage.
		Elevation of these structures permits the epiglottis to lay over the trachea's opening, protecting the airway.
	moon.ouhsc.edu /dthompso/namics/swallow.htm (673 words)

	eMedicine - Supraglottic Cancer : Article by Jonathan E Sonne, MD (Site not responding. Last check: 2007-10-22)
		These areas of the supraglottis are structured within the framework of the supraglottic larynx, which includes the upper half of the thyroid cartilage, the arytenoid cartilages, and the epiglottis (see Image 1).
		The entire preepiglottic space then is removed along the inner surface of the lamina of the thyroid cartilage toward the anterior commissure of the vocal fold.
		Resection includes the preepiglottic space if the infrahyoid epiglottis is invaded and the preepiglottic space and paraglottic space if the false cords are involved.
	www.emedicine.com /ent/topic687.htm (3986 words)

	Human Anatomy - Lab 25 Step 8 (Site not responding. Last check: 2007-10-22)
		The inferior root descends from behind the internal jugular vein to join the superior root.
		Dissect out the entire ansa cervicalis [probe indicates superior root; forceps hold inferior root; different specimen], identify both roots, and trace its branches to the infrahyoid muscles.
		The infrahyoid muscles include the thyrohyoid, sternothyroid, sternohyoid, and omohyoid muscles.
	ect.downstate.edu /courseware/haonline/labs/l25/080200.htm (83 words)

	Neck
		Initially we address the infrahyoid portion (below the hyoid) as having 4 tubes enclosed by a greater outer tube.
		Limited above by the attachments of the infrahyoid muscles and their fascia to the thyroids cartilage and to the hyoid bone
		Continuous upward from the infrahyoid region to reach the base of the skull
	iris3.med.tufts.edu /headneck/neck.htm (8906 words)

	Apria - resources - News (Site not responding. Last check: 2007-10-22)
		The quantity of deep cervical fat was subjectively assessed, as was patency of the ipsilateral internal jugular vein (IJV) and asymmetry in size and contour of the sternocleidomastoid (SCM), trapezius, and infrahyoid strap muscles.
		The SCM muscle contour and size was asymmetric or flattened and atrophic in 16/28 necks.
		Atrophy of the infrahyoid strap muscles was seen in 8/28 necks."
	www.apria.com /resources/1,2725,494-354430,00.html (467 words)

	Recent Publications and Research (Site not responding. Last check: 2007-10-22)
		Shah RR, Lewin JS The infrahyoid neck is a complex region of anatomy and pathology.
		The spatial division of the infrahyoid neck into six discrete spaces is accomplished by three layers of the deep cervical fascia.
		Once understood, the pathologic processes in this region can be better characterized.
	www.uhrad.com /research/RS032.HTM (66 words)

	Amazon.com: Transverse infrahyoid approach to bilateral glottic tumors: An article from: The Annals of Otology, ... (Site not responding. Last check: 2007-10-22)
		Amazon.com: Transverse infrahyoid approach to bilateral glottic tumors: An article from: The Annals of Otology, Rhinology & Laryngology [HTML]: e-Books and Docs
		Transverse infrahyoid approach to bilateral glottic tumors: An article from: The Annals of Otology, Rhinology & Laryngology [HTML]
		In these instances, we prefer the superior transverse infrahyoid approach to the glottis, which transects the petiole of the epiglottis and reflects the contents of the preepiglottic space...
	www.amazon.com /exec/obidos/tg/detail/-/B000B5BNRI?v=glance (294 words)

	The Neck (Site not responding. Last check: 2007-10-22)
		FASCIAE A. Enveloping - divides to enclose sternomastoid and trapezius muscles B. Fascia of infrahyoids - encloses the infrahyoid muscles.
		A. Sternocleidomastoid - C.N. Digastric - posterior belly - C.N. anterior belly - C.N. Infrahyoid (strap) muscles - ansa cervicales - C1-C3 1.
		Superior thyroid - infrahyoid - superior laryngeal 2.
	www.meddean.luc.edu /lumen/meded/grossanatomy/course_stuff/syllabus/16_neck.html (394 words)

	Mukherji, Atlas of Head and Neck Imaging : Thieme Medical Publishers
		With hundreds of high-quality illustrations, this book makes the difficult identification and localization of complex neck masses relatively simple.
		This book provides CT and MR examples for more than 200 different diseases of the suprahyoid and infrahyoid neck, as well as clear and concise information on the epidemiology, clinical findings, pathology, and treatment guidelines for each disease.
		- More than 800 illustrations - including color schematics - to aid in evaluating lesions of the suprahyoid and infrahyoid neck
	www.thieme.com /SID2155596604580/productsubpages/pubid323381614.html (237 words)

	Amazon.ca: Atlas of Head and Neck Imaging: Books (Site not responding. Last check: 2007-10-22)
		Atlas provides a simplified approach to the complex anatomy and pathology of the head and neck.
		Presents CT and MR examples for more than 200 different diseases of the suprahyoid and infrahyoid neck, as well as clear and concise information on the epidemiology.
		Write an online review and share your thoughts with other shoppers!
	www.amazon.ca /exec/obidos/ASIN/3131360712 (254 words)

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