64. Disturbances in cell division

Question 1

Normal causes of cell mitosis

Answer 1

Reaction to environmental stimuli (neighbouring cells)
Growth factor (GF)
Blood vessel injury
Deficient oxygen supply

Question 2

Cell types of : basal epithel cell, haemoblasts, basal cells of the Lieberkühn crypts, spermatogonia

Answer 2

Vegetative intermitotic cells

Question 3

cell types of : precursor white blood cells, spermatocytes

Answer 3

Differentiating intermitotic cells

Question 4

cell type of: hepatocytes, tubular epithel cells of the kidney, endothelial cells, adventitial cells

Answer 4

Reversible postmitotic cells

Question 5

Fix postmitotic cells example

Answer 5

neurons, erythrocytes

Question 6

Endomitosis

Answer 6

Nuclei and cytoplasms are not separated

Question 7

Polyploidia

Answer 7

possessing more than two complete sets of chromosomes.

Question 8

Syntitial giant cells

Answer 8

– Several similar cells fuse

Question 9

Multinucleated giant cells

Answer 9

– Nucleus duplicates
– Cytoplasms are not separated during mitosis

Question 10

Physiological form of Multinucleated giant cells

Answer 10

– Osteoclasts (multinucleated)
– Placental giant cells (syntitiotrophoblast)
– Megakaryocytes (endomitosis)

Question 11

Pathological cell division

Answer 11

Intense proliferation (Regeneration, inflammation, tumor)

Question 12

Pathological form of Multinucleated giant cells

Answer 12

• Langhans type
  – Foreign body type
  – Touton type
  – Syntitial giant cells

Question 13

What virus can form Syntitial giant cells

Answer 13

Parainfluenza 3
bovine leukosis virus