Embryology

Question 1

What structures derive from the ectoderm?

Answer 1

1) Skin
2) Anus
3) Mouth & teeth
4) Mammary glands
5) Lens of eye
6) Hair & nails
7) Adrenal medulla
8) Nerves
9) C-cells of thyroid
10) Pituitary glands

Remember the cheeky diagram about the admiral & babe

Question 2

What structures derive from the endoderm?

Answer 2

Mainly GI tract
Adrenal cortex
Liver

Question 3

What structures derive from the mesooderm?

Answer 3

Muscles, bones & MSK

Question 4

What structures correspond with 1st pharyngeal arch?

Answer 4

Structures supplied by CN V3

Question 5

What structures correspond with 2nd pharyngeal arch?

Answer 5

Structures supplied by CN VII

Question 6

What structures correspond with 3rd pharyngeal arch?

Answer 6

Structures supplied by CN IX

Question 7

What structures correspond with 4th pharyngeal arch?

Answer 7

Structures supplied by CN X

Question 8

What structures correspond with 6th pharyngeal arch?

Answer 8

Structures supplied by CN X (recurrent laryngeal)

Question 9

From which embryological structure does the peritoneum arise from?

Answer 9

Endothelial lining of the primitive coelomic cavity of the embryo

Question 10

How many holes does the male peritoneum have?

Answer 10

TRICK QUESTION

Peritoneum is completely closed

Question 11

How many holes does the female peritoneum have?

Answer 11

2 holes - made by the uterine tubes