Pulp McQs

Question 1

Histocytes (tissue macrphage cells)
Function,site,shape

Answer 1

1- function: elimination of dead cells (phagocytosis)
2-site: pulp center ,associated with small vessels and capillary
3- shape: aggregation of vesicles,phagosomes.

Question 2

Plasma cell ( function - nucleus)

Answer 2

1 produce antibodies
2 nucleus: small ,eccentic ,cart wheel

Question 3

Mast cells (shape-fuction -cytoplasm)

Answer 3

Round nucleus with granular cytoplasme
Histamine ,heparin

Question 4

Dentritic cells( function)

Answer 4

Antigen presenting cells , stimulate division,and activity of T- lympocytes

Question 5

Cells of leucocytes are found extravascularly in normal pulp

Answer 5

Eosinophil , basophils,neutophil, lymphocytes

Question 6

True or false ?
In normal pulp T- lympocytes are found but B Lymphocytes are scare

Answer 6

True

Question 7

Progenitor cells (UDMC) function

Answer 7

Forming odontoblast and fibroblast when need.

Question 8

Number of progenitor cells

Answer 8

Young pulp : primary cells ,decrease with the old age.

Question 9

What is the site of progenitor cells?

Answer 9

1- pulp core
2- cell rich zone
3 - along pulp vessels

Question 10

Progenitor cells by LM (shape - nucleus - cytoplasm - side view

Answer 10

1- large, poly hedral
2- central, lightly stained
3- abundant ,peripheral cytoplasmic extensions
4- spindle in shape

Question 11

Side view of progenitor cells is spindles

Answer 11

True

Question 12

Fibers in pulp (types - young pulp - old aged - elastic fibers)

Answer 12

1- types : 1type 3 collagen.
2- single , scattered
3- organized into bundles, specially in most apical part

Question 13

No elastic fibers in the pulp except……

Answer 13

Walls of large blood vessels

Question 14

Ground substance ( nature, composition, function)

Answer 14

1- structure : glycoseaminoglycan glycoproteins, water.
, 2- dense ,gel like
3- support , tranport , tranport.

Question 15

Arteries, arterioles supply from…..

Answer 15

Superoir, inferoir alveolar arteries

Question 16

Blood vessels enter pulp from….1.., and terminate in….2….,called ….3…

Answer 16

1- apical foramen .
2- odontoblastic regoin
3- sub odontoblastic paritel capillary plexus .

Question 17

Flow of blood in the pulp is more rapid than any part of the body because…..

Answer 17

Pulpal pressure is the highest.

Question 18

Lymph nodes ( definition - course - stain - braches )

Answer 18

Endothelial lined tubes .
Iron hematoxylan stain
H,Y,I branches.

Question 19

Lymph vessels of pulp , periodontal ligaments have common outlet

Answer 19

True

Question 20

Anterior teeth lymph vessels drain in ….1……, but posterior in….2…

Answer 20

1-submental lymph node
2- submandibular,deep cervical lymph nodes.