Control of Salivary Secretion

Question 1

how is saliva secretion controlled

Answer 1

whole system under neurological control

Question 2

what are the nerves causing the salivary glands to sec

Answer 2

efefrent nerves

secretomotor

Question 3

what comes from the initiating signal (stimulus)

Answer 3

parasymp outflow from brainstem salivary nuc

simp outflow from thoracic spinal cord

together inc sec

Question 4

what is released from parasymp nerves o the salivary gland

Answer 4

ACh release

Question 5

what is released form simp nerves in salivary gland

Answer 5

NA release

alpha and beta receps

Question 6

salivary efefrent nerves also

Answer 6

peptidergic nerves

Question 7

what do peptidergic nerves effect

Answer 7

affect acing, ductal and myopia cells

Question 8

what are the substances prod from effects f peptidergi nerves

Answer 8

neuropep transmitters?
sub P
vasoactive intestinal pep
calcitonin gene related peptide

Question 9

what is the innervation of myopia cell

Answer 9

dual innervation

simp and parasymp

Question 10

what is a reflex

Answer 10

innate 
automatic
predictable 
goal directed involving CNS 
to known stimulus

Question 11

what is an adequate stimulus for saliva prod

Answer 11

usually assc with feeding

Question 12

what are the reflex control components of saliva sec

Answer 12

complex secretomotor an vasomotor innervation

Question 13

is saliva sec dependant on reflex activity

Answer 13

yes

Question 14

what do the parasymp and simp do

Answer 14

parasymp - control volume

simp - control protein in saliva

Question 15

what si the stimuli for the gustatory reflex

Answer 15

stimuli delivered to gustatory receptors in taste buds

basic taste cause salivary secretion

Question 16

what are the tastes assc with amount of saliva

Answer 16

sour > salt > bitter & sweet

Question 17

what is the maximal flow achieved

Answer 17

5% citric acid

7ml/min

Question 18

wat does the masticatory salivary reflex dept on

Answer 18

mechanoreceptive afferent neurones innervating

• PDL
• oral mucosa
• TMJ
• muscle

Question 19

how does one abstain a sample of saliva

Answer 19

lashley cup and cannula

Question 20

does a true olfactory parotid salivary reflex exist in humans

Answer 20

no

but an olfactory submandibular salivary reflex does exist

Question 21

hat does the intitiaing signal for salivation involve

Answer 21

higher centres that facilitate it
but also inhibit
enhance response

Question 22

what sit he role of the higher centres

Answer 22

conditioning the response

an assc of stimulus with actual food intake rather than the direct oral stimulus of food intake

Question 23

what are some examples of condtiones reflexes

Answer 23

pavlov
learning
sight, smell and sound

Question 24

what is the psychic stimuli

Answer 24

mouthwatering
anticipation
- awareness of saliva
- performed saliva erected by contraction of myopia cells