Salivary gland structure

Question 1

name this part of the salivary gland

Answer 1

secretory ducts

Question 2

name this part of the salivary gland

Answer 2

striated ducts

Question 3

name this part of the salivary gland

Answer 3

intercalated ducts

Question 4

name this part of the salivary gland

Answer 4

acini

Question 5

use this diagram to describe the root saliva takes through a salivary gland

Answer 5

Salivary secretion starts in the acini located which produce the primary salivary secretion.

Secretion travels along small simple ducts call intercalated ducts.

Feed into a larger duct network called striated ducts which modify the saliva.

Then secretory ducts which get bigger as they travel towards the mouth

Question 6

name this structure

Answer 6

acinus

Question 7

name this structure

Answer 7

intercalated duct

Question 8

name this structure

Answer 8

striated duct

Question 9

name this structure

Answer 9

secretory duct

Question 10

describe the structure of an acinus

Answer 10

pyramidal cells with a central lumen

the cells are polarised - peripheral nucleus

Question 11

what does the acinus do?

Answer 11

produce primary salivary secretion

Question 12

what types of secretion to acini produce?

Answer 12

serous and mucous secretions

Question 13

what type of secretion does parotid gland produce?

Answer 13

serous

Question 14

what type of secretion does the submandibular gland produce?

Answer 14

mixed
serous and mucous

Question 15

what type of secretion does the sublingual gland produce?

Answer 15

mucous

Question 16

name this acinus

Answer 16

serous acinus

Question 17

name this acinus

Answer 17

mucous acinus
as squashed basal nuclei

Question 18

name this acinus

Answer 18

mucous acinus and serous demilune

mucous acinus with serous cells attached

Question 19

describe a serous acinar cell

Answer 19

prominent nuclei in basal

basophilic RER - gives dark purple colour

granular appearance

Question 20

describe a mucous acinar cell

Answer 20

Question 21

why are mucous acinar cells pale?

Answer 21

as lots of granules make up most of the cell which contains mucin which is either lost during preparation or not easily stained.

these granules also flatten the nucleus

Question 22

name these blue cells

Answer 22

myoepithelial cells

Question 23

where are myoepithelial cells located in the salivary gland?

Answer 23

on the acini and intercalated ducts

Question 24

what is the function of myoepithelial cells?

Answer 24

have contractile elements to regulate duct lumen diameter

squeeze the saliva out of the acinus and into the intercalated ducts

Question 25

what are the shape of intercalated duct cells?

Answer 25

cuboidal

Question 26

describe the nucleus in intercalated duct cells

Answer 26

large central nucleus

Question 27

what is the function of intercalated ducts?

Answer 27

Passive tubes for saliva transport

Question 28

which salivary gland structure is not present in sublingual gland?

Answer 28

striated ducts

Question 29

describe the shape of striated duct cells

Answer 29

large cells with a folder basal membrane

Question 30

describe the nucleus of striated duct cells?

Answer 30

central - due to the basal membrane folds so it cant get any more basal (actually basal)

Question 31

how does the structure of striated duct cells relate to its function?

Answer 31

folded basal membrane to increase surface area for exchange on substances allowing it to modify saliva

Question 32

describe the lumen of secretory (collective) ducts

Answer 32

large lumen

Question 33

describe the arrangement of cells in secretory (collective) ducts as they get closer to the mouth

Answer 33

initially pseudostratified
then becomes stratified so it can merge with stratified squamous oral epithelium