submandibular region (anatomy of the neck)
TRANSCRIPT
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
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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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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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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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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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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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Submandibular Ganglion(Page 88)
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