Secretion Of Slaiva Flashcards
What kind of secretion form the parotid
Serous
What kind of secretion form the submandibular
Mixed mucous and serous
What is a mucous secretion and serous
Serous is watery
Mucous is viscous thick with more glycoproteins
What secretion is the sublingual
Mostly mucous
What happens to the saliva as it travels along the duct
Ions such as sodium and chloride reabs
And pottasium is sec into saliva
What is resting secretion
Present throughout the day and night Keeps mouth and oropharynx Moist Lubrictaed Protected
What is stimulated secretion
During eating Massive increase over short peirod Sensory stimulated Gustatory receps on tongue Mevhanoreceps Olfactory receps smell Nociceptors Higher centres
What is whole mouth saliva
Mixed secretions form all glands
All Producing variable volumes
Plus debris and other oral fluids such as gingival crevicular fluid
What is the stim and unstim Bol form each of the glands
Unstim
- parotid –> 20%
- submandibular –> 65%
- sublingual –> 7-8%
- minor –> 7-8%
Stim
- parotid –> 50%
- submand –> 30%
- Subling–> 10%
- minor –> 10%
What are some inorganic components of saliva
Sodium Pottasium Chlorine Fluoride Calcium Phosphate Bicarbonate
What does fluoride in the mouth do
Enamel protection
What does calcium do in the mouth
Supersaturated saliva
What does bicarbonate do in the mouth
Buffer
What are some organic components of saliva
Lipase - fat metab Hi statins - anti fungal Immunoglobulins Growth factors Amylase - carb metab
What are some functions of saliva
Protect tissue Protect teeth Enhance taste Lubriacte food Neut organic acids Discourage bac growth Recycle fluoride
Which glands produce amylase and what does it do
Parotid and submand
Hydrolyses carbs to maltose etc
Denatured in stomach
Cleanse mouth
What glands prod lipase and what does it do
Lingual glands associciated with circumvaklate papillae Fat digestion Resist stomach acid Babies Taste buds
What is salivary sec dept on
Reflex activity which is innate
Automatic
To a known stimulus such as feeding
What are some stumuli that cause salivary sec
Gustatory Masticatory Olfactory Psychic Visual Thermo receptive Possibly nociceptive
What instrument is used to sample saliva
Lash let cup and cannula
What is the gustatory salivary Reflex
Stumuli delivered to gustatory receptors in taste buds
Basic tastes cause salivary sec
Sour>salt> bitter and sweet
What is the role of intra oral ,evhanoreceptors
Output of saliva directly proportional to masticatory forces
Contribute to masticatory reflex
Does a true olfactory parotid salivary reflex exist in humans
No
What su psychic stimuli
Anticipation of food ‘mouthwatering”not proven
May just be awareness of saliva in mouth
Myoepthelial cells or facial musculature
What is a conditioned reflex
Demo by Pavlov dog that certain set conditions accompany natural stimulus
Not easily demo in man
What are the three pairs of salivary glands major
Parotid
Submandibular
Sublingual
(Numerous minor - lips, cheeks, palate, tongue etc)
