GI 3 Flashcards
1
Q
does filiform papillae have taste buds?
A
No, they dont
2
Q
does fungiform papillae have taste buds?
A
yes, they do
3
Q
which are the glands that lie under the base of the circumvallate papillae?
A
Von ebner gland, they drain the watery secreation into the baseof the cleft
4
Q
are von ebner gland serous or mucous glands?
A
serous gland
5
Q
what are the enamel made of?
A
Its made of prisms (rods) of calcium hydroxyapitate crystals.
6
Q
why do dark lines of retzius appear?
A
because during growth of the prisms, they change in direction.
the lines are responsible for the rythmic growth of enamel.
7
Q
what are cementum made of?
A
its made 50% calcium hydroxyapitate and 50% organic material and water.
8
Q
whats dentine made of?
A
70% calcium hydroxyapitate, 20% organic material and 10% water.
