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Flashcards in The Salivary Glands Deck (67)
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1

there are three major pairs of salivary glands what are they called

the parotid, the submandibular and the sublingual

2

other than the three major pairs of salivary glands what other glands are able to secrete saliva

numerous minor accessory glands scattered throughout the oral mucosa

3

how would you describe saliva

a hypotonic watery secretion

4

list four things the saliva contains

mucus, enzymes, antibodies and inorganic ions

5

list three enzymes found in saliva

amylase, lipase, lysozyme

6

list an antibody found in the saliva

IgA

7

the overall composition of saliva will vary according to what

according to which of the glands is most active

8

when do minor glands secrete and under which control are they

minor glands secrete continously and are under local control

9

when do major glands secrete

in response to parasympathetic activity which is induced by physical, chemical and psychological stimuli

10

what is the daily saliva production in humans

600-1500ml

11

focusing on the innervation of the salivary glands, where do sensory fibres in the anterior third of the tongue travel to

the facial nerve

12

focusing on the innervation of the salivary glands, where do the posterior two thirds of the tongue travel to

the glossopharyngeal nerve

13

where does the facial nerve and glossopharyngeal nerve synapse

in the superior and inferior salivatory nuclei in the brain stem

14

what do the facial nerve branches innervate, which glands

the submandibular and the sublingual

15

what do the glossopharyngeal nerve innervate, which gland/glands

the parotid gland

16

what is the main neurotransmitter involved in the control of salivary secretion

acetylcholine

17

which two methods do the salivary glands use in order to increase secretion

1. vasodilation 2. myoepithelial contraction

18

there are two main types of secretory cells, what are these

serous cells and mucous cells

19

what do serous cells releae

serous fluid

20

what do serous cells contain that produce the serous fluid

zymogen granules

21

what do zymogen granules contain

enzyme containing

22

where are the zymogen granules found

found apically

23

what kind of enzymes do the zymogen granules produce

amylase and lipase

24

in a histology slide of serous cells, where are the nuclei found and what do they loo like

nuclei are basally located, rounded with dispersed chromatin

25

what do mucous cells contain

mucigen granules

26

how are mucigen granules stained

weakly stained

27

what are the nuclei characteristcally like in mucous cells

nuclei characteristically are flattened against the basement membrane

28

where does a serous demilune present itself

in mixed secretory units where mucous cells predominate, a semilunar cap of serous cells called a serous demilune is seen

29

how would you describe the shape of a serous demilune

a crescent shape

30

what sort of structure does a salivary secretory unit portray

a terminal branched tubulo-acinar structure