Definitions

Question 1

What is gastrulation?

Answer 1

Cellular organisation into germ layers in days 7-10 of early foetal development

Question 2

What are Blaschko’s lines?

Answer 2

Developmental growth pattern of skin (not following vessels nerves or lymphatics

Question 3

What is vitiligo?

Answer 3

Autoimmune disease with loss of melanocytes

Question 4

What is Nelson’s syndrome?

Answer 4

Melanin stimulating hormone is produced in excess by the pituitary

Question 5

What is a malignant melanoma?

Answer 5

A tumour of the melanocyte cell line

Question 6

What is Alopecia areata?

Answer 6

Autoimmune hair loss

Question 7

What are Melanocytes?

Answer 7

Pigment producing cells from neural crest

Question 8

What is hyperkeratosis?

Answer 8

Increased thickness of the keratinlayer

Question 9

What is parakeratosis?

Answer 9

Persistance of nuclei in the keratin layer

Question 10

What is acanthosis?

Answer 10

Increased thickness of epidermis

Question 11

What is papillomatosis?

Answer 11

Irregular epithelial thickening

Question 12

What is spongiosis?

Answer 12

Oedema between keratinocytes

Question 13

What is inflammtory cell infltrate?

Answer 13

Acute or chronic lymphocytes and/or neutrophils