Embryology Of The Head And Face

Question 1

Anterior portion of the neural tube

Answer 1

Forebrain
Midbtain
Hindbrain

Question 2

Hindbrain develops into 8 bulges called

Answer 2

Rhombomeres

Question 3

Choices: Rostral or caudal end

Partially segments to form seven somatomeres

Answer 3

Rostral

Question 4

1st stream of neural crest cells provides?

Answer 4

Ectomessenchyme to the face

Question 5

2nd stream of neural crest cells is targeteg to what arch?

Answer 5

First arch which contribute to the formation of jaws

Question 6

Small clefts that separate bulges on lateral aspectof the embryo EXTERNALLY

Answer 6

Branchial grooves

Question 7

Small depressions on the inner aspect of the pharyngeal wall that separates each brachial arches INTERNALLY

Answer 7

Pharyngeal pouches

Question 8

First arch: ? Cartilage

Answer 8

Merckels

Question 9

Second arch: ? Cartilage

Answer 9

Reicherts

Question 10

3rd arch?

Answer 10

Cartilage of lower body

Question 11

4th arch

Answer 11

Cartilage of larynx

Question 12

Nerve innervation of 1st arch

Answer 12

Trigeminal nerve

Question 13

Nerve innerv of third arch

Answer 13

Glossopharyngeal cn9

Question 14

Day 24, first process?

Answer 14

Maxillary

Question 15

Day 28, localizd thickening

Answer 15

Olfacy placodes