Embryology

Question 1

First - type I

Answer 1

parallels the EAC

Question 2

first - type II

Answer 2

at the angle of the mandible
involves the parotid gland
ends in EAC

Question 3

second

Answer 3

below the angle of the jaw
anterior to the SCM 
between ICA and ECA 
superficial to the hypoglossal and glossopharyngeal n
ends in tonsillar fossa

Question 4

third

Answer 4

deep to SCM
deep to ICA/ECA and glossopharyngeal n
superficial to vagus and hypoglossal nerves
through thyohyoid membrane
superior to the superior laryngeal nerve
pyriform sinus

Question 5

fourth

Answer 5

within thyroid or mediastinum
inferior to the superior laryngeal nerve
parallel to RLN
pyriform sinus

Question 6

Structures from hillock of His

Answer 6

1: tragus
2: helical crus
3: helix
4: anti helical crus
5: anti helix
6: anti tragus

Question 7

which hillocks are derived from what branchial structures

Answer 7

1-3: first branchial arch

4-6: second branchial arch