Anatomy Of Salivary Glands Flashcards
3 major salivary glands
Bilateral pairs;
Parotid glands
Submandibular glands
Sublingual glands
When do the salivary glands form?
First 4-6 weeks of development
Position of the parotid glands
Below external auditory meatus (ear)
Between mastoid process and posterior border of ramus
Parotid gland saliva volume and constituency
25% total saliva volume
100% serous saliva
Parotid gland ducts
Stensens OR parotid duct
5cm long
Runs from; gland outside masseter muscle, parallel and 1cm below zygomatic arch
Opens buccally upper first molar regions
Parotid gland nerve innervation
Glossopharyngeal (autonomic)
Auriculotemporal (sensory)
Intimately associated with the Facial
nerve
Position of submandibular gland
Between body of mandible and mylohyoid muscle, in submandibular fossa
Submandibular gland saliva volume and composition
60-65% total saliva volume
Mixed serous and mucous saliva secretions
Submandibular gland duct
Wharton’s duct
5cm long
Opens under anterior part of tongue, lateral to lingual fraenum at sublingual caruncle
Submandibular gland nerve innervation
Chorda tympani (branches from facial nerve)
Lingual branch of the inferior dental nerve
Position of sublingual gland
Floor of mouth in the sublingual fossa
Sublingual gland saliva volume and composition
5-10% total saliva volume
60% mucous saliva
Sublingual gland duct
Bartholin’s duct
10-20 smaller ducts (Rivinus ducts) open along the sublingual fold
Sublingual gland nerve innervation
Chorda tympani (branches from facial nerve)
Lingual branch of the inferior dental nerve
What are the new discovery glands and where are they located
Tubarial glands
Located in nasopharynx
Saliva volume and composition of minor salivary glands
Less than 10% total saliva volume
Mixed saliva, mainly mucous
Produce lots of salivary proteins
How are the minor salivary glands named
According to location; Labial, buccal, palatine, lingual
Minor salivary glands nerve innervation
Parasympathetic innervation
Sympathetic innervation
Minor salivary gland ducts
Numerous small groups of secretory units opening via short ducts directly into the mouth.
What lines the ducts and protects the saliva?
Epithelium
What surrounds the epithelium, protecting and supporting the gland?
Connective tissue
2 types of connective tissue
Capsule - surrounds the outer portion of gland
Septum - divides inner portion of gland into lobes and lobules
What do the capsule and septum do?
Carry nerve and blood to supply the cells.