L1 histology an physiology of pulp

Question 1

pulp is of what origin?

Answer 1

ectomesenchymal origin

Question 2

reason pulp is unique (other than obvious ones)

Answer 2

contains specialized cells (odontoblasts) that differentiate into hard tissue- secreting cells

Question 3

most prominent immune cells in pulp?

Answer 3

dendritic cells

Question 4

what does the :
-odontoblastic zone contain :

Answer 4

dendritic cells , unmyelinated nerve fibers ,capillaries around odontoblasts

Question 5

what does the cell free zone contain :

Answer 5

-numerous bundles of reticular fiber(von korffs)
-capilaries and nerves

Question 6

what’s in the cell rich zone ?

Answer 6

-cells composed of fibroblasts and preodontoblasts
-capillaries form extensive vascular system

Question 7

whats the pulp core consist of>?

Answer 7

it acts as a support system for peripheral pulp because it contains blood vessels and nerves.

principle fibers are fibroblasts with collagen as ground substance

Question 8

what are the principle fibers of pulp core?

Answer 8

fibroblasts (most common cells , especially in crown)with collagen as ground substance

Question 9

lymphoctes are found ___

Answer 9

extravascularly in normal pulps

Question 10

preodontoblasts are___

Answer 10

stem cells , differentiate under influence of BMP

Question 11

Fiber content of extracellular compartment of pulp?

Answer 11

predominantly type I collagen with some type 3

] odontoblasts only form type 1 collagen while fibroblasts form type 1 and 3

Question 12

which part of the tooth contains the most collagen ?

Answer 12

apical region

Question 13

what forms the bulk of the pulp ?

Answer 13

non collagenous matrix (ground substance)

Question 14

pulpal response to inflammation:

Answer 14

release of lysosomal enzymes which causes hydrolysis of collagen and relapse of kinins

leads to vascular permiability and escaping fluids accumilating in pulp interstatial space –> pressure —> pain

Question 15

A-Delta –> pain is well localized