Saliva and salivary glands

Question 1

Name the 3 salivary glands

Answer 1

Parotid
Submandibular
Sublingual

Question 2

Parotid gland

• where does it enter mouth
• what size is it
• what does it secrete
• what nerve is it innervated by

Answer 2

Anterior to ear
Enters mouth opposite the 2nd top molar 
Largest 
Secretes a-amylase 
Innervated by CN IX

Question 3

Submandibular gland

• where does it enter mouth
• what does it secrete
• what nerve is it innervated by

Answer 3

Medial to the body of the mandible
Duct of wharton enters mouth under tongue
mix of serous and thick mucous
Innervated by CN VII

Question 4

Sublingual gland

• where does it enter mouth
• what does it secrete
• what nerve is it innervated by

Answer 4

Medial to submandibular glands
Connects with duct of wharton and enters mouth under tongue
Secretes thick mucous cells
Innervated by CN VII

Question 5

Serous

Answer 5

Produce a watery secretion rich in a-amylase

Question 6

Mucous

Answer 6

Produce a thick mucous rich secretion

Question 7

Function of saliva

Answer 7

Lubrication
Protection
Digestion
Increased secretion prior to vomiting

Question 8

Formation of saliva

primary and secondary

Answer 8

Primary secretion - acinar cells

Secondary secretion - duct cells

Question 9

Unconditioned control of salivary secretion

Answer 9

Receptors activated when food is in mouth

Question 10

Conditioned control of salivary secretion

Answer 10

Learned response

Stimulation of salivary glands by senses

Question 11

Parasympathetic/sympathetic nerves are dominant in normal saliva production

Answer 11

Parasympathetic

Question 12

Normal saliva production

Answer 12

Parasympathetic nerves
CNVII and CNIX involved
Large volume of watery enzyme rich saliva
Mediated by M3/M1 muscarinic ACh receptors and VIP

Question 13

Saliva production during stressful times

Answer 13

Sympathetic nerves activated
Small volume of thick mucous rich saliva
Mediated by a and b1 adrenoceptors