Topography and innervation of salivary glands

Types of salivary glands

Serous: the parotid gland, von ebner glands of tongue

Mucous: glands of the root of the tongue.

Seromucous submandibular gland, sublingual gland, labial lands, buccal glands, molar glands.

According to size:

Minor salivary glands: scattered throughout oral cavity embedded within mucosa and submucosa.

NO NEED FOR NEURONAL STIMULI

Major: opens via ducts into oral cavity.

NEED FOR NEURONAL STIMULI

(Parotid, submandibular, sublingual)

Parotid gland (characteristics)

Purely serous

largest salivary gland

located in the parotid nest

enclosed in parotid fascia

what are the borders of the parotid nest.

Anteriorly: Masseter muscle, ramus of mandible, medial pterygoid.

posteriorly: mastoid process, sternocleidomastoid, posterior belly of digastric

superiorly: zygomatic arch

inferiorly: body of mandible

superficially: parotid masseteric fascia.

contents of the parotid nest

External carotid artery.

branches of facial nerve.

auricotemporal nerve.

Retromandibular vein, (a fusion of the maxillary vein and the superficial temporal vein)

Blood supply of the parotid gland

superficial temporal artery,

maxillary artery

posterior auricular artery

Venous drainage:

Parotid veins (retromandibular veins)

Submandibular Gland characteristics

-seromucous gland

-located in the submandibular triangle.

-opens in the sublingual caruncle,

blood supply of submandibular gland

facial artery and lingual artery

Venous drainage of submandibular gland:

facial vein and lingual vein

Lymphatic drainage:

submandibular lymph nodes

Sublingual gland characteristics

Mainly mucous secretion, but still seromucous

it opens in the sublingual fold also in the sublingual caruncle with the submandibular

the minor ones open on either side of he major, and open on the sublingual fold.

Blood supply of the sublingual gland (same as submandibular) also the same as the lymphatic drainage (of the submandibular gland

facial artery, lingual artery

Venous drainage:

facial vein, lingual vein.