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Topic: Digastric muscle

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List of muscles of the human body

Omohyoid muscle

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Temporal bone

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Buccinator muscle

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Suprahyoid

Trapezius muscle

Electric motor

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Diaphragm

	The Barrow Quarterly Article 18-2-1
		Upward retraction of the digastric muscle exposes the distal portion of the cervical segment of the internal carotid artery (ICA).
		Below the digastric muscle at the level of the common carotid artery bifurcation, the ICA is crossed by the hypoglossal nerve, the ansa cervicalis, and the lingual and facial veins (Fig.
		Medial to the digastric muscle, the ICA is crossed by the stylohyoid muscle and the occipital and posterior auricular arteries.
	www.emergemd.com /bniq2/article.asp?article_ref_id=18-2-1 (5691 words)

	Stylohyoid muscle - Wikipedia, the free encyclopedia
		The Stylohyoid muscle is a slender muscle, lying in front of, and above the posterior belly of the digastric muscle.
		It is perforated, near its insertion, by the tendon of the digastric muscle.
		The Stylohyoideus (Stylohyoid muscle) is a slender muscle, lying in front of, and above the posterior belly of the Digastricus.
	en.wikipedia.org /wiki/Stylohyoid_muscle (334 words)

	Reference.com/Encyclopedia/Digastric muscle
		The digastric muscle (named digastric as it has two bellies) is a small muscle located under the jaw.
		The posterior belly is attached to the mastoid process of the temporal bone, and the anterior belly is attached to the front of the mandible.
		The two bellies of the digastric muscle have different embryological origin, and are supplied by different cranial nerves.
	www.reference.com /browse/wiki/Digastric_muscle (171 words)

	Mylohyoid muscle - Wikipedia, the free encyclopedia
		The Mylohyoid muscle, flat and triangular, is situated immediately above the anterior belly of the digastric muscle, and forms, with its fellow of the opposite side, a muscular floor for the cavity of the mouth.
		It arises from the whole length of the mylohyoid line of the mandible, extending from the symphysis in front to the last molar tooth behind.
		The middle and anterior fibers are inserted into a median fibrous raphé extending from the symphysis menti to the hyoid bone, where they joint at an angle with the fibers of the opposite muscle.
	en.wikipedia.org /wiki/Mylohyoid_muscle (253 words)

	CHAPTER 49: THE SUBMANDIBULAR REGION
		The posterior belly of the digastric muscle and the stylohyoid muscle are crossed superficially by the facial vein, the great auricular nerve, and the cervical branch of the facial nerve.
		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)

	[No title]
		The carotid triangle is bordered by the posterior digastric muscle, the superior belly of the omohyoid muscle and the SCM.
		The digastric or submandibular triangle is bordered by the anterior and posterior digastric muscles and the mandible.
		The subclavian triangle is bordered by the inferior omohyoid muscle, the SCM and the clavicle.
	www.med.unc.edu /~kimplera/classes/anatomy/hn2.doc (1104 words)

	Neck muscles
		The deltoid muscle moves the humerus bone and is used to raise the arm outward from the side.
		The muscles run upward and come together in the middle of their course (both pieces of the muscle lie side by side), but do not actually touch and are inserted in the front of the hyoid bone.
		The rectus capitis muscles are small triangular muscles that extend from the cervical vertebrae and insert in the occipital bone at the base of the skull.
	www.american.edu /adonahue/m7neck.htm (1499 words)

	Musculoskeletal lecture notes Anatomy- USMLE Review
		The inferior constrictor muscle and the cricopharyngeus are innervated by recurrent branches of the vagus nerve.
		It is motor to this muscle and sensory to the mucosa of posterior 1/3 of tongue, mucosa of pharynx, palatine tonsil and soft palate.
		The thyroarytenoideus muscle from the internal surface of the angle of the thyroid cartilage to the lateral aspect of the arytenoid cartilage.
	www.aismcentral.net /neck.html (5390 words)

	Facial Plastic Surgery Procedures - From Yes They're Fake!
		Targets: mylohyoid muscle, a flat triangular muscle on each side of the mouth that is located above the anterior (front) belly of the digastric muscle, extends from the inner surface of the mandible to the hyoid bone, and with its mate on the opposite side forms the floor of the mouth.
		How to: Lace your fingers together, leaving your thumbs sticking out or use the middle part of your index fingers (between the two joints) as if you were saying "Grace" with your index fingers sticking partially up.
		If you feel a tautness to your under chin area directly after you should be able to tell.
	yestheyrefake.net /facial_plastic_surgery.html (1020 words)

	Joan C. Edwards School of Medicine - Marshall University, Huntington, WV
		The anterior belly of the Digastric muscle and the Tensor tympani muscle are innervated by the Trigeminal nerve.
		The Orbicularis oculi muscle and the Stylohyoid muscle are innervated by the facial nerve.
		All muscles of the palate (except for Temsor Palati) are innervated by the vagus nerve.
	musom.marshall.edu /anatomy/grosshom/practice_quiz_head_neck_1.html (343 words)

	Submandibular Region, Nasal & Oral Cavities - Dissector Answers
		The deep portion folds around the posterior border of the mylohyoid muscle to lie deep in the sublingual space between the mylohyoid muscle and the hyoglossus and genioglossus muscles.
		The submandibular triangle is defined by the inferior border of mandible and the anterior and posterior bellies of digastric muscle.
		The intrinsic muscles assist in all of the actions of the tongue but are particularly involved in deviations of the tongue from side to side.
	www.med.umich.edu /lrc/coursepages/m1/anatomy/html/head/submand_ans.html (2158 words)

	The cooperative function of the digastric muscle during unilateral clenching (Site not responding. Last check: 2007-10-26)
		On multiple comparisons, the digastric muscle which is the opening muscle showed a significantly different aspect from the masseter muscle and the temporal muscle which are the closing muscles (p<0.01).
		As the assumption increased, the less variation in the influence of clenching resin blocks unilaterally was recognized at the masseter muscle and the temporal muscle.
		In contrast, an increasing influence of resin blocks was recognized at the digastric muscle (p<0.05).
	iadr.confex.com /iadr/2004Hawaii/techprogram/abstract_47768.htm (327 words)

	Electrophysiological observations on an unusual, task specific jaw tremor -- Miles et al. 63 (2): 251 -- Journal of ...
		A and B are single sweeps of EMG in digastric, and left and right masseter muscles; C and D are ensemble averages of rectified EMG signals, triggered by chin taps given at the arrow with a tendon hammer.
		The bursts of muscle activity are confined to the digastric muscle and were palpable bilaterally.
		The first tremulous digastric burst after the stimulus is augmented by an additional, stimulus evoked response at about 90 ms, which makes this peak broader than the prestimulus peaks.
	jnnp.bmjjournals.com /cgi/content/full/63/2/251 (1880 words)

	Paksitan Journal of Medical Sciences
		The left mylohoid muscle of twenty adult Wistar albino rats was injected slowly at three different places by means of Hamilton syringe mounted on a micro-drive machine, with 10-50µl of DAPI-Pr (25% of 4’6-Diamidino-2-phenyl indole-2-HCL added to equal amounts of 5% Primuline), after resection of the anterior belly of the digastric muscle under anesthesia.
		Because the two bellies of the digastric muscle, with which the mylohyoid is most associated, are the ones that shall occupy the caudal position within this medial part of the nucleus, as implied by the dual innervation of the digastric muscle by the more caudally lying facial nerve.
		The spreading of the injected dye did not affect the underlying anterior belly of the digastric muscle because that muscle was resected, and no cells were found labeled in the caudal part of the nucleus (the domain area of the digastric muscle).
	www.pjms.com.pk /issues/aprjun03/article9.html (2155 words)

	Human Anatomy - Lab 25 Step 17 (Site not responding. Last check: 2007-10-26)
		Identify the attachment of the anterior belly of the digastric muscle to the digastric fossa of the mandible and the attachment of the posterior belly of the digastric muscle to the medial aspect of the mastoid process of the temporal bone.
		Identify the stylohyoid muscle spanning from the styloid process to the hyoid bone.
		The intermediate tendon of the digastric muscle passes between slips of the stylohyoid muscle close to their attachment to the hyoid bone.
	ect.downstate.edu /courseware/haonline/labs/l25/170101.htm (92 words)

	Physician Assistant Gross Anatomy
		Digastric muscle — two bellies form a wide V. anterior belly arises from the digastric fossa on the mandible and the posterior belly arises from the mastoid notch of the temporal bone
		Brachialis muscle — arises from the anterior surface of the humerus, from the entire surface of the medial intermuscular septum and from the anterior surface of the lateral intermuscular septum; inserts on the tuberosity of the ulna; supplied by the musculocutaneous nerve and the radial nerve
		Tibialis posterior muscle — arises from the posterior surface of the face of the tibia, from the medial surface of the fibula and the posterior surface of the interosseous membrane
	medinfo.ufl.edu /pa/anatomy/hitlist2.html (9294 words)

	Comparison of External Load Compensation During Rhythmic Arm Movements and Rhythmic Jaw Movements in Humans -- Abbink ...
		The aim of this study was to investigate the response of the arm muscles to sudden loading during rhythmic movements.
		Muscle activity was normalized using the results obtained at the end of series of movement cycles (>10) in which the muscle was loaded (middle).
		Muscle shortening, velocity and acceleration of muscle shortening observed in biceps brachii and masseter after application of a load to flexion of the arm and jaw closing.
	jn.physiology.org /cgi/content/full/82/3/1209 (5449 words)

	Neck lecture notes
		between the posterior and anterior bellies of the digastric muscle and inferior border of the mandible.
		between the posterior belly of the digastric, superior belly of the omohyoid and the sternocleidomastoid muscle.
		Its sensory innervation is by the recurrent laryngeal nerves (mixed-motor to all laryngeal muscles except for the cricothyroid muscle) which pierced the cricothyroid membrane.
	web.indstate.edu /thcme/duong/neck.html (5659 words)

	Task-dependence of Jaw Elevator and Depressor Co-activation -- Proeschel and Raum 82 (8): 617 -- Journal of Dental ...
		An electromyographic study of the activity of certain suprahyoid muscles (mainly the anterior belly of digastric muscle) and of the reciprocal innervation of the elevator and depressor musculature of the mandible.
		Activity of the digastric muscle in swallowing and chewing.
		Digastric muscle response as a function of the knowledge of the task to be performed.
	jdr.iadrjournals.org /cgi/content/full/82/8/617 (2379 words)

	Characteristics of mentalis muscle activity during chewing (Site not responding. Last check: 2007-10-26)
		The purpose of this investigation was to study the characteristics of the surface electromyographic (EMG) activity of the mentalis muscle during chewing.
		A digital EMG recording device (Muscle Tester ME3000P, Mega Electronics Ltd, Kuopio, Finland) and bipolar electrodes (Blue sensor, type-N-00-S) were used to record the surface EMG from the masseter muscle, anterior belly of the digastric muscle and the mentalis muscle during chewing.
		It was recognized that the activity of the mentalis and anterior belly of the digastric muscle began at the end of the activity of the masseter muscle.
	iadr.confex.com /iadr/2004Hawaii/techprogram/abstract_46297.htm (287 words)

	Muscle spindles in the digastric muscle of the rabbit -- Muhl and Kotov 67 (9): 1243 -- Journal of Dental Research
		Muscle spindles in the digastric muscle of the rabbit -- Muhl and Kotov 67 (9): 1243 -- Journal of Dental Research
		Muscle spindles in the digastric muscle of the rabbit
		The digastric muscle of the rabbit was studied for the presence of muscle
	jdr.iadrjournals.org /cgi/content/abstract/67/9/1243 (153 words)

	Expression of Unique and Developmental Myosin Heavy Chain Isoforms in Adult Human Digastric Muscle -- Wang et al. 52 ...
		Berzin F (1995) Electromyographic analysis of the sternohyoid muscle and anterior belly of the digastric muscle in head and tongue movements.
		Karkazis HC, Kossioni A, Heath MR, van Willigen JD (1993) Anterior digastric muscle responses to sudden unloading of the mandibular elevator muscles in younger and older adults.
		Kuffler SW, Williams EMV (1953) Properties of the slow skeletal muscle fibers of the frog.
	www.jhc.org /cgi/content/full/52/7/851 (3695 words)

	Male rats require testosterone to develop contralateral digastric muscle activity in response to noxious stimulation of ... (Site not responding. Last check: 2007-10-26)
		The influence of testosterone on the postnatal development of reflex electromyographic (EMG) jaw muscle activity evoked by injection of mustard oil (MO) into the temporomandibular joint region and the later recurrence of this EMG activity after intravenous injection of naloxone, was studied in male rats.
		MO-evoked EMG activity in the contralateral digastric muscle and naloxone-induced recurrence of this EMG activity were fully developed in intact, 8-week-old rats.
		These data suggest that testosterone is required for the development of a contralateral nociceptive reflex in the digastric muscle of male rats.
	www.arclab.org /medlineupdates/abstract_12459510.html (188 words)

	Article Figures and Tables
		After reflecting the skin flap, the sternocleidomastoid muscle is reflected anteriorly after it is detached from the superior nuchal line and the mastoid process.
		The internal jugular vein (IJV) is located deep with respect to the sternocleidomastoid muscle and courses deep with respect to the digastric muscle.
		The superolateral boundary is formed by the superior oblique muscle and the inferolateral boundary is formed by the inferior oblique muscle.
	www.thejns-net.org /jns/issues/v96n2/fig_tab/n0960302_f1.html (626 words)

	IngentaConnect Bilateral abnormal anterior bellies of digastric muscles (Site not responding. Last check: 2007-10-26)
		Two muscle bundles, both of which fused with mylohyoid muscle close to the midline, were observed on the right side.
		The anterior one originated from the digastric fossa and its length and width were 27 and 9 mm, respectively.
		Anatomical variations of digastric muscle have to be considered in the imaging procedures of the soft tissue masses in the submental region.
	www.ingentaconnect.com /content/bsc/asi/2004/00000079/00000002/art00007 (234 words)

	IngentaConnect Abnormal anterior belly of the digastric muscle: A proposal for t... (Site not responding. Last check: 2007-10-26)
		Abnormal anterior belly of the digastric muscle: A proposal for the classification of abnormalities
		We recognized an abnormal anterior belly of the digastric muscle in an 83-year-old male cadaver.
		Three muscle bundles were observed on the left anterior belly: (i) attached to the left digastric fossa; (ii) attached to the right digastric fossa; and (ii) attached to the raphe of the mylohyoid muscle.
	www.ingentaconnect.com /content/bsc/asi/2003/00000078/00000003/art00008 (209 words)

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