Metaplasia

Question 1

Metaplasia ?

Answer 1

Change of one type of cell to another of the SAME CLASS

Question 2

What causes metaplasia

Answer 2

Chronic irritation/ infection
Vitamin A deficiency

Question 3

Types of metaplasia

Answer 3

Connective tissue
Mesothelial
Endothelial
Tumor

Question 4

Give me an example of epithelial metaplasia ?

Answer 4

Columnar epithelium into squamous due to chronic cholecystitis due to presence of stone

Question 5

Transitional epithelium into squamous in ?

Answer 5

Urinary bladder due to hilharziasis(parasitic infections)

Question 6

Pseudostratified columnar to squamous in?

Answer 6

Bronchitis due to smoking and infection

Question 7

Change of type connective tissue to another type of connective tissue?

Answer 7

Connective tissue metaplasia

Question 8

Give me an example of connective tissue metaplasia ?

Answer 8

Myositis ossificans which is change of fibrous tissue into bone/cartilage

Question 9

Disordered cellular proliferation ?

Answer 9

Dysplasia

Question 10

Characteristics of Dysplasia?

Answer 10

Phleomorphism( change in size/shape)
Loss of polarity orientation)
Hyper chromatic nuclei (deep basophilic staining)
Presence of mitosis

Question 11

Fate of dysplasia ?

Answer 11

They are pre malignant which can progress into cancer