Submandibular Region (Anatomy of the Neck)
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Transcript of Submandibular Region (Anatomy of the Neck)
SUBMANDIBULAR REGION
(Page 70)Dr.Sherif Fahmy
Sterno-mastoid m.
Superior belly of omohyoid m.
Digastric m. Lower
border of body of mandible
Midline of neck
Muscles of Submandibular (Suprahyoid) Region
1- Digastric muscle.2- Stylohyoid muscle.3- Myelohyoid muscle.4- Hyoglossus muscle.5- Geniohyoid muscle.6- Genioglossus muscle.
Superficial part of submandibular gland
Anterior belly of digastric m.
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Posterior belly of digastric m.
Anterior belly of digastric m.
Myelohyoid nerveSubmental
artery
Myelohyoid m.
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Posterior belly of digastric m.
Stylohyoid m.
Hyoglossus m.
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Myelohyoid m.
Lingual n.Submandibular ganglion
Deep part of submandibular gland Hypoglossal
nerve
Posterior belly of digastric m.
Submandibular duct
Dr. Sherif FahmyMyelohyoid n
Submental vs
Anterior belly of digastric m
Hyoglossus m.
Geniohyoid m.
Hyoglossus m.
Genio-glossus m.
Stylo-glossus m.
Lingual nerve
Hypoglossal nerve
Deep part of submandibular gland
Submandibular duct
Myelohyoid m. (cut)
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Styloid process
Stylohyoid ligamnent
Glossopharyngeal n.
Middle constrictor m.
First part of lingual artery
3rd part of lingual artery
Geniohyoid m.
Genioglossus m.
Sublingual gl.
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Digastric Muscle(Page 70)
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Mastoid process
Styloid process
Posterior belly of digastric m.
Stylohyoid m.
Anterior belly of digastric m.Hyoid bone
Fibrous loop
Digastric fossa
Mandible
Intermediet tendon
Relations of Digastric Muscle
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A- Anterior Belly
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Superficial part of submandibular gland
Anterior belly of digastric m.
Superficial Relations of Anterior belly Digastric muscle
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Dr.Sherif Fahmy
Anterior belly of digastric m.
Myelohyoid nerveSubmental
artery
Myelohyoid m.
Deep Relations of Anterior belly Digastric Muscle
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B- Posterior Belly
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Superficial part of submandibular gland
Posterior belly of digastric m.
Parotid gland
Superficial Relations of Posterior Belly Digastric muscle
Mastoid process
Angle of mandible
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Dr.Sherif Fahmy
Posterior belly of digastric m.
Internal carotid art.
External carotid art.
Facial art.
Occipital art.
I.J.V.
Hypoglossal n.Vagus n.
Spinal accessory n.
Deep relations of posterior belly of digastric m.
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Dr.Sherif Fahmy
Relations to Borders of Posterior Belly of
Digastric m.
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Stylohyoid m
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Posterior belly of digastric m.
Posterior auricular art.
Occipital art.
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Myelohyoid Muscle (Diaphragma Oris)
(Page 74)
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Myelohyoid muscle
Myelohyoid line
Median raphe
Body of hyoid bone
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Relations of Myelohyoid M.
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Anterior belly of digastric m.
Myelohyoid m.
myelohyoidnerve
Submental artery
Beginning of anterior jugular vein
Superficial Submental lymph nodes
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Superficial part of submandibular gland
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Geniohyoid m.
Hyoglossus m.
Genio-glossus m.
Stylo-glossus m.
Lingual nerve
Hypoglossal nerve
Deep part of submandibular gland
Submandibular duct
Myelohyoid m. (cut)Deep
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Submental Triangle(Page 40)
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Anterior belly of digastric m.
Myelohyoid m.
Submental artery
Beginning of anterior jugular vein
Body of hyoid bone
Submental lymph nodes
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Hyoglossus Muscle(Page 78)
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Greater horn of hyoid m.
tongue
Hyoglossus m.
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Relations of Hyoglossus M.
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Myelohyoid m.Lingual n.Submandibular
ganglion
Deep part of submandibular gland Hypoglossal
nerve
Posterior belly of digastric m.
Superficial Relations of Hyoglossus Muscle
Submandibular duct
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Styloid process
Styloglossus m.
Lingual nerve
Submandibular ganglion
Deep part of submandibular gland
Hypoglossal n.
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Styloid process
Stylohyoid ligamnent
Glossopharyngeal n.
Middle constrictor m.
First part of lingual artery
3rd part of lingual artery
Geniohyoid m.
Genioglossus m.
Deep, anterior and posterior relations
Sublingual gl.
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Stylohyoid Muscle(Page 76)
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Dr. Sherif Fahmy
Geniohyoid Muscle(Page 70)
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Geniohyoid m.
Genial tubercles
Body of hyoid bone
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Genioglossus Muscle(Page 78)
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Hypoglossal nerve
Genioglossus m.
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Submandibular Salivary Gland
Page 82Dr.Sherif Fahmy
Parts, site and extensions• Parts: superficial & deep to myelohyoid
muscle.• Site: Upper part is deep to mandible
(submandibular fossa) while the lower part in digastric triangle.
• Extensions:Anterior: mental foramen.Posterior: Angle of mandible.Superior: myelohyoid line.Inferior: intermediate tendon of digastric muscle.
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Superficial part of submandibular gland
Posterior belly of digastric m.
Anterior belly of digastric m.
Parotid gland
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Relations of the superficial part
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Lateral surface
Inferolateral surface
Medial pterygoid m.
Facial artery
Facial veinCervical branch of facial nerve
Submandibular lymph nodes
Body of mandible
Lateral & inferolateral relations
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Myelohyoid m.Lingual n.Submandibular ganglion
Deep part of submandibular gland
Hypoglossal n.
Posterior belly of digastric m. Dr. Sherif Fahmy
Relations of deep part and course of
the duct
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Hyoglossus m.
Myelohyoid m.
Lingual n.
Hypoglossal n.
Submandibular duct
Deep part of submandibular gland
Styloglossus m.
Sublingual gland
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Frenulum of tongue Sublingual fold
Opening of submandibular duct
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Nerve supply:1- Sensory2- Sympathetic.3- Parasympathetic.Blood supply.By facial vessels.
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Myelohyoid m.
Lingual n.
Submandibular ganglion
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Applied Anatomy
• Formation of a stone in its duct is common because its secretion is muco-serous and more viscid.
• In this case the gland swell during chewing.
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DIGASTRIC TRIANGLE (Page 36)
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Boundaries
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Digastric m. Lower
border of body of mandible
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Posterior belly of digastric m.
Stylohyoid m.
Anterior belly of digastric m.
Mandible
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Floor of Digastric Triangle
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Myelohyoid m.
Hyoglossus m.
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ContentsDr.Sherif Fahmy
Lateral surface
Inferolateral surface
Medial pterygoid m.
Facial artery
Facial veinCervical branch of facial nerve
Submandibular lymph nodes
Body of mandible
Lateral & inferolateral relations
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Myelohyoid m.Lingual n.Submandibular ganglion
Deep part of submandibular gland
Hypoglossal n.
Posterior belly of digastric m.
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Sublingual Salivary Gland
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Sublingual salivary gland
Submandibular salivary gland
Parotid gland
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Myelohyoid m.
Lingual n.
Submandibular duct
Deep part of submandibular gland
Sublingual gland
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Dr. Sherif Fahmy
Submandibular Ganglion(Page 88)
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Dr.Sherif Fahmy