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Topic: Geniohyoid muscle


In the News (Fri 11 Dec 09)

  
  Method for treatment of sleep apnea by electrical stimulation - Patent 5591216
The geniohyoid muscle 30 is one of the elevator muscles of the hyoid 15.
The genioglossus 35, styloglossus 40 and hyoglossus 45 muscles are extrinsic muscles of the tongue 20.
The ansa cervicalis branch 60 innervates the sternothyroid muscle 24 and the sternohyoid muscle 22.
www.freepatentsonline.com /5591216.html   (5825 words)

  
 IV. Myology. 5c. The Supra- and Infrahyoid Muscles. Gray, Henry. 1918. Anatomy of the Human Body.
The Sternohyoideus (Sternohyoid muscle) is a thin, narrow muscle, which arises from the posterior surface of the medial end of the clavicle, the posterior sternoclavicular ligament, and the upper and posterior part of the manubrium sterni.
Below, this muscle is separated from its fellow by a considerable interval; but the two muscles come into contact with one another in the middle of their course, and from this upward, lie side by side.
The central tendon of this muscle varies much in length and form, and is held in position by a process of the deep cervical fascia, which sheaths it, and is prolonged down to be attached to the clavicle and first rib; it is by this means that the angular form of the muscle is maintained.
www.bartleby.com /107/112.html   (1384 words)

  
 CHAPTER 49: THE SUBMANDIBULAR REGION
The tendon that connects the anterior and posterior bellies of the muscle is anchored to the hyoid bone, commonly passing through the stylohyoid muscle.
Deep to the muscles lie the external and internal carotid arteries, the internal jugular vein, cranial nerves X-XII, and the sympathetic trunk.
The submandibular ganglion lies on the lateral surface of the hyoglossus muscle, medial to the mylohyoid muscle, superior to the submandibular duct and hypoglossal nerve, and inferior to the lingual nerve, from which it is suspended by several branches.
www.dartmouth.edu /~humananatomy/part_8/chapter_49.html   (1068 words)

  
 geniohyoid muscle (anatomy) - General Practice Notebook   (Site not responding. Last check: 2007-10-12)
Geniohyoid is one of the suprahyoid muscles of the anterior triangle of the neck.
It arises from the inferior mental spine on the posterior surface of the symphysis menti of the mandible.
Geniohyoid is innervated by fibres from the first cervical (C1) nerve root which are relayed via the hypoglossal nerve.
www.gpnotebook.co.uk /cache/-221249457.htm   (169 words)

  
 Physiology of adult Homo sapiens - Musculoskeletal apparatus and movements
appendicular muscles : the muscles of a limb
epimeric muscle : a muscle derived from an epimere and innervated by a posterior ramus of a spinal nerve
hypomeric muscle : a muscle derived from a hypomere and innervated by an anterior ramus of a spinal nerve.
focosi.altervista.org /muscles.html   (15907 words)

  
 AACPS Corequest
The masseter muscle arises from the lower border and medial surface of the zygomatic arch and attaches to the lateral aspect of the mandibular ramus.
This muscle arises inferiorly, laterally, and posteriorly from the medial surface of the pterygoid plate and inserts on the medial ramus and mandibular angle.
The masseter muscle extends from the medial and lateral surfaces and lower border of the zygomatic arch to the anterolateral surface of the mandibular ramus.
www.aacplasticsurgery.org /member4/newcore2003/2004/mandible.html   (2082 words)

  
 Current state of the tongue model
Length sections of the Genioglossus muscle are visible (dark matter in the center of the jaw), and cross sections of the Mylohyoid (directly next to the bone of the mandible) and the Hyoglossus muscle (very dark, interrupted semicircle around the tongue body).
On the other hand, the fiber directions of the geniohyoid which connects a lower point of the mandible (behind the chin) to the front of the hyoid bone is not visible and can only be assumed to be roughly parallel to its outer boundaries.
muscle is on the underside of the tongue and forms a slab that connects to a rim on the inside of the mandible.
webpages.charter.net /reinerwt/themodel.htm   (2854 words)

  
 Larynx
The cricothyroid muscle lies anterior and external to the larynx and was identified in the study of the muscular triangle of the neck.
This muscle rotates the arytenoid cartilages laterally (abduct), causing the vocal cords to separate from one another, opening the rima glottidis.
This serves to shorten the tubal length of the air passage between the base of the skull (body of sphenoid) and the vocal cords.
mywebpages.comcast.net /wnor/lesson11.htm   (1661 words)

  
 Human Anatomy - Lab 34 Step 5   (Site not responding. Last check: 2007-10-12)
Identify the mylohyoid muscle [frontal section, sagittal section] that forms the floor of the oral cavity.
Fibers of the mylohyoid muscle meet at a mid-line raphe which runs from the mental symphysis to the body of the hyoid bone.
The geniohyoid muscle lies on the superior surface of the mylohyoid muscle, and inserts to the hyoid bone.
ect.downstate.edu /courseware/haonline/labs/l34/050104.htm   (124 words)

  
 Lab Manual - Submandibular Region, Nasal & Oral Cavities
Clear the superficial layer of deep cervical fascia and expose the submandibular gland, the digastric muscle (its anterior and posterior bellies), the mylohoid muscle and the stylohyoid muscle.
Identify the extrinsic muscles of the tongue: genioglossus, hyoglossus, and styloglossus muscles.
Identify the geniohyoid muscle lying between the mylohyoid and the genioglossus muscles.
www.med.umich.edu /lrc/coursepages/M1/anatomy/html/head/submand.html   (1386 words)

  
 Figure 7   (Site not responding. Last check: 2007-10-12)
The GG muscle is organized in a fan shape to insert throughout the tongue.
Except for the horizontal GG the fascicles of the GG appear to be of equal length.
The geniohyoid muscle is beneath the horizontal GG and it is difficult to separate the two muscles.
www.upperairway.com /figure_7.htm   (329 words)

  
 Geniohyoid muscle - Wikipedia, the free encyclopedia
The Geniohyoid muscle is a narrow muscle situated above the medial border of the mylohyoid muscle.
It arises from the inferior mental spine on the back of the symphysis menti, and runs backward and slightly downward, to be inserted into the anterior surface of the body of the hyoid bone; it lies in contact with its fellow of the opposite side.
Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
en.wikipedia.org /wiki/Geniohyoid_muscle   (198 words)

  
 The Effects of Chronic Episodic Hypercapnic Hypoxia on Rat Upper Airway Muscle Contractile Properties and Fiber-Type ...
muscle, which was cut to expose the underlying geniohyoid muscles.
Muscles were allowed to equilibrate in the bath for 30 min.
was determined, and the muscle was held for the remainder of
www.chestjournal.org /cgi/content/full/122/4/1400   (2956 words)

  
 Oral Cavity, Oral Pharynx and Palatine Tonsil
The mylohyoid muscles of the two sides joint in the mid line forming a sling across the floor of the mouth.
Removal of the fascia around the sublingual gland (slg) and the deep part of the submandibular gland (sm) allows you to visualize the remainder of the structures of the mouth.
Beneath the mucosa of the arches, identify the small palatoglossus (pg) and palatopharyngeus (pp) muscles.
mywebpages.comcast.net /wnor/lesson10.htm   (562 words)

  
 Geniohyoid muscle function in awake canines -- Yokoba et al. 95 (2): 810 -- Journal of Applied Physiology
muscle fibers in the center of the midportion of the Genio.
from the geniohyoid branch of the hypoglossal (XII) nerve in
O'Halloran KD, Curran AK, and Bradford A. Effect of upper airway cooling and CO on diaphragm and geniohyoid muscle activity in the rat.
jap.physiology.org /cgi/content/full/95/2/810   (3855 words)

  
 Muscle fiber type alters after intermittent hypoxic stimulation   (Site not responding. Last check: 2007-10-12)
Objective: To determine whether intermittent hypoxia (IH) alters fiber-types of the skeletal muscle, we hypothesize that the principal fiber-type of rat geniohyoid muscles would change from type-2A to type-2B to intermittent hypoxia, while no change in muscle properties would occur in the diaphragm.
Single fibers harvested from the target muscles were mechanically isolated using a dissecting scope and micro-tweezers.
However, fiber types of the geniohyoid muscle began to exhibit changes from MHC 2A to 2B after 5 hr of IH exposure, and this conversion was readily evident at 10 hr.
iadr.confex.com /iadr/2005Balt/techprogram/abstract_61117.htm   (333 words)

  
 Practice Practical
This nerve supplies all of the muscles of the larynx except the cricothyroid muscle.
This muscle opens the mouth by pulling the head of the condyle forward and downward, dropping the jaw.
Yes, this is the nerve to the mylohyoid muscle and the anterior belly of the digastric.
mywebpages.comcast.net /wnor/practicepractical.htm   (1009 words)

  
 UH head and neck
Note that the subclavian vein passes anterior to the anterior scalene muscle, and that the apex of the parietal pleura is close to the vein.
Reflect the coronoid process with the temporalis muscle still attached to it and peel the inferior aspect of the temporalis from the cranium, reflecting it upwards, so that it is out of the way of the remainder of the dissection.
Identify the lingual artery at the anterior and posterior edges of this muscle and note that the rest of the artery is hidden from view because it passes medial to the hyoglossus muscle.
www2.hawaii.edu /~rosenhei/head.html   (11980 words)

  
 Breathing modes, body positions, and suprahyoid muscle activity -- Takahashi et al. 29 (4): 307 -- Journal of ...
The geniohyoid muscle activity is truncated in the second half during jaw opening in the subject 2.
An enzyme tracer study of the organization of the somatic motor center for the innervation of different muscles of the tongue: evidence for two sources.
9 O’Halloran KD, Curran AK, Bradford A. Effect of upper airway cooling and CO on diaphragm and geniohyoid muscle activity in the rat.
jorthod.maneyjournals.org /cgi/content/full/29/4/307   (2509 words)

  
 Effect of upper airway cooling and CO2 on diaphragm and geniohyoid muscle activity in the rat -- O'Halloran et al. 9 ...
Effect of upper airway cooling and CO2 on diaphragm and geniohyoid muscle activity in the rat -- O'Halloran et al.
Effect of upper airway cooling and CO2 on diaphragm and geniohyoid muscle activity in the rat
In all animals, the geniohyoid muscle had phasic inspiratory activity, which slightly preceded diaphragmatic activity.
erj.ersjournals.com /cgi/content/abstract/9/11/2323   (353 words)

  
 Electrically-activated dilator muscles reduce pharyngeal resistance in anaesthetized dogs with upper airway obstruction ...
In the present study, we evaluated the effect of UAW muscle contraction on UAW patency in anaesthetized dogs in vivo breathing spontaneously through partially and completely obstructed UAW.
Wire electrodes were implanted bilaterally into the genioglossus (GG), geniohyoid (GH), sternothyroid (ST), and sternohyoid (SH) muscles for electrical stimulation (ES), and into the alae nasi for electromyographic (EMG) recording.
Genioglossus and geniohyoid stimulation both resulted in a significant reduction in Ruaw, which was most pronounced during partial obstruction, reducing Ruaw from 54 +/- 11 to 14 +/- 3 and from 74 +/- 12 to 31 +/- 5 cmH2O.L-1.s, respectively.
erj.ersjournals.com /cgi/content/abstract/8/9/1537   (438 words)

  
 PT Central - Complete Muscle Tables for the Human Body
Included is each muscle's origin, insertion, action, blood supply and innervation.
Select here to print the Hosford Muscle Tables in a compact table form.
Once in a region, you will be able to focus further on the muscles of that region.
www.ptcentral.com /muscles   (192 words)

  
 Effects of chronic intermittent asphyxia on haematocrit, pulmonary arterial pressure and skeletal muscle structure in ...
geniohyoid muscle tension decreased to 46.4 ± 2.1% of
Effect of chronic intermittent asphyxia on geniohyoid fatigue (A) and recovery from fatigue (B) and sternohyoid fatigue (C) and recovery from fatigue (D).
Chronic intermittent asphyxia impairs rat upper airway muscle responses to acute hypoxia and asphyxia.
ep.physoc.org /cgi/content/full/89/1/44   (3609 words)

  
 Mandible   (Site not responding. Last check: 2007-10-12)
- insertion point of the lateral pterygoid muscle on the medial surface of the neck of the condyle
The mandible is the body support for the mandibular teeth and is also the insertion for the four primary muscles of mastication and the accessory muscles of mastication.
It is the movable portion of the TMJ articulation with the temporal bone
iris3.med.tufts.edu /dentgross/labguide/Mandible.html   (239 words)

  
 Exam2
The cell membrane of a skeletal muscle fiber that surrounds the cytoplasm is the:
The structures of the muscle fiber that shorten to cause skeletal muscle fiber contraction are the:
The muscle that can be felt as a prominent ridge extending superiorly and inferiorly posterior to the ear especially when the head is turned is the:
www-class.unl.edu /bios114/anatomylecture/exam2.htm   (1207 words)

  
 Effects of Age and Gender on Rat Upper Airway Muscle Contractile Properties -- Cantillon and Bradford 55 (8): 396 -- ...
muscles from young and old, male and female rats in physiological
of either muscle, and this was true for both young and old animals.
geniohyoid force was greater in old than in young rats.
biomed.gerontologyjournals.org /cgi/content/abstract/55/8/B396   (279 words)

  
  In individuals anatomically predisposed to upper airway obstruction during sleep, the openness of the airway depends on the activity of upper airway dilator muscles.
Ritanserin consistently reduced peak muscular activity in the geniohyoid muscle by about 40%, without any relation of dosage to degree of suppression.
As to their theory of the neuroanatomical basis for these effects, they noted that the systemic administration of the drugs made it impossible to rule out effects of neurons in other parts of the brain other than the caudate raphe nucleus.
www.geocities.com /klwhitemd/page40.html   (1086 words)

  
 Thyrohyoid muscle - Wikipedia, the free encyclopedia
The Thyrohyoid muscle is a small, quadrilateral muscle appearing like an upward continuation of the Sternothyreoideus.
It arises from the oblique line on the lamina of the thyroid cartilage, and is inserted into the lower border of the greater cornu of the hyoid bone.
This page was last modified 01:09, 17 December 2006.
en.wikipedia.org /wiki/Thyrohyoid_muscle   (163 words)

  
 Amazon.com: "transverse mandibular muscle": Key Phrase page   (Site not responding. Last check: 2007-10-12)
Projection begins (right) with the mouth opening; the mm element snaps downward by the contraction of a transverse mandibular muscle (not shown) and the genioglossus contracts to stiffen the tongue.
muscle are interposed between motoneurons innervating the superficial masseter muscles farther laterally and the temporalis muscle dorsomedially.
Motoneurons innervating the transverse mandibular muscle have not been specifically located in the rat but are clustered together in the same region as motoneurons innervating the...
www.amazon.com /phrase/transverse-mandibular-muscle   (369 words)

  
 Anatomy of Facial and Oral Structures
Provide an overview of the muscles of mastication and depressor muscles of the mandible.
List the two muscle groups which make up the tongue and describe their respective functions.
Identify major and minor salivary glands, their locations in the mouth and duct openings.
www.homesteadschools.com /dental/Descriptions/Anatomy.htm   (197 words)

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