lecture-6 Flashcards
dental formula (20 cards)
what do you mean by diphyodant ?
a type of dentition in which an organism develops two successive sets of teeth during its lifetime.
Name and number of the two set of teeth ( diphyodant ) ?
Milk teeth - 20
Permanent teeth - 32
How many teeth develop twice in the life time of human being ?
20
The number of teeth that are developed only once in the life time of human being is
12
Write the dental formula ?
( number of teeth in upper half / number of teeth in lower half ) x 2
dental formula of permanent teeth ?
( 2I 1C 2P 3M / 2I 1C 2P 3M ) x 2 = 32
dental formula of milk teeth ?
( 2I 1C 0P 2M / 2I 1C 0P 2M ) x 2 = 20
which group of teeth is absent in children ?
Premolars
What is wisdom teeth ? how many wisdom teeth are there ?
The last 3rd molar that comes at the age of 18-25
4 wisdom teeth
What are vestigial organs ? Number of vestigial organs in human body . Examples
Organs that have no function .
100 vestigial organs
appendix
wisdom teeth
What are enzymes ?
enzymes are proteins that acts like biocatalysts
Which enzyme is not a protein ?
Ribozyme
Which enzyme is present in buccal cavity ? What it does ?
Ptyalin or salivary Amylase .
It converts starch into Maltose .
which part of alimentary canal do not digest food ?
Pharynx and oesophagus
What does stomach secretes ?
HCL
What is the function of HCL in stomach ?
-> Kills bacteria present in food
-> activates enzymes present in stomach
Which enzymes get activated by HCL ?
pepsinogen —–> pepsin ——–> digest protein
If by an unknown accident the acid secreting cells of the stomach wall of an individeual are damaged . Digestion of which biomolecules will be effected ?
Protein only
Who protects the stomach walls from HCL ?
Mucus membrane
What are the causes of peptic ulcer ?
-> Acidity
-> Helicobacter Pyroli (bacteria)
