Saliva

Question 1

A substance that conducts electricity when dissolved in water is called an

Answer 1

electrolyte

Question 2

howto know if you have strong acid

Answer 2

all h’s disassociate

Question 3

healthy resting saliva ph range

Answer 3

6.7-7.4

Question 4

) buffer system

Answer 4

bicarboante

Question 5

The concentration of bicarbonate ion in resting saliva is approximately
?mmol/L, and this increases to over ?mmol/L on stimulation

Answer 5

1

50

Question 6

lower pka means what

Answer 6

stronger acid

Question 7

neutral solution ph

Answer 7

7

Question 8

erosion of tooth stucture

Answer 8

loss of dental
hard tissue due to chemical demineralisation

Acids demineralise the outer surface of enamel or dentine

Question 9

factors influencing erosion(3)

Answer 9

Acid source – extrinsic/intrinsic including GORD
• diet
• Saliva variations like quantity and quality

Question 10

danger zone for saliva ph

Answer 10

5.5

Question 11

salivary pellicle

Answer 11

protein-based layer
which is rapidly formed on dental surfaces after its
removal by tooth brushing

acts as diffusion barrier

Question 12

buffer solution

Answer 12

a solution that has
amounts of either a weak acid and its conjugate base, or a
weak base and its conjugate acid.

can resist change in ph

Question 13

buffer capacity

Answer 13

the amount of acid or base
that a buffer can absorb without a significant
change in it’s pH

Question 14

saliva

Answer 14

is a film of fluid that that keeps the oral cavity moist and coats the teeth and mucosa

Question 15

3 major salivary glands

Answer 15

partoid
submandibular
sublingual

Question 16

another name for whole saliva

Answer 16

mixed saliva

Question 17

mixed/whole saliva is made up of

Answer 17

serous saliva and mucous saliva

Question 18

serous saliva

Answer 18

watery consistency and high number of consituents dissolved in it

Question 19

mucous saliva

Answer 19

thick/sticky secretion

provides lubrication for the mouth

consistency depends on time of day

Question 20

resting saliva rates for each gland

Answer 20

submandibular 60%
sublingual 5%
partoid 20%
minor glands 15%

Question 21

saliva basic characteristics

Answer 21

protein rich
hypotonic
vresting ph=6.7-7.4

Question 22

important functions of saliva (2)

Answer 22

buffering acids
and
pellicle formation that promotes biofilm

Question 23

biofilm

Answer 23

semipermeable membrane between the saliva and the tooth surface

Question 24

galvanic shock

Answer 24

Pain or discomfort sensation caused
by electric current generated by a
contact between two dissimilar metals
mostly conducted by saliva

Question 25

paratoid salivary glands location

Answer 25

superficial portion anterior and inferior to the ear between the skin and the maeester muscle

deeper portion behind the ramus of the mandible

Question 26

submandibular glands locations

Answer 26

in the posterior part of the floor of the mouth adjacent to the medial aspect of the mandible and wrapping around the posterior border of the mylohyoid muscle.

Question 27

classes of salivary ducts

Answer 27

intercalated
striated
excretory

Question 28

serous acinus in duct system has x layer of epitelium

Answer 28

single

Question 29

mucous acinus in duct system has x layer of epitelium

Answer 29

double

Question 30

2 main secretory cells

Answer 30

serous and mucous

Question 31

myoepethelial cell

location and fucntion

Answer 31

surrounding acinar cells

contracts and squeezes acinus to secret saliva