Embryology

Question 1

What are the derivatives of the 1st pharyngeal pouch?

Answer 1

epithelium of the middle ear and the Eustachian tube

Question 2

What are the derivatives of the 2nd pharyngeal pouch?

Answer 2

epithelium of the palatine tonsil crypts

Question 3

What are the derivatives of the third pharyngeal pouch?

Answer 3

thymus and inferior parathyroid glads

Question 4

What are the derivatives of the 4th pharyngeal pouch?

Answer 4

superior parathyroid glands and ultimobranchial body

Question 5

What is derived from the 1st pharyngeal membrane?

Answer 5

tympanic membrane

Question 6

What is derived from the 1st pharyngeal groove?

Answer 6

Epithelium of outer ear

Question 7

What nerve is derived from the 1st pahryngeal arch?

Answer 7

Trigeminal (V2 and V3)

Question 8

What nerve is derived from the 2nd pharyngeal arch?

Answer 8

facial nerve

Question 9

What nerve is derived from the 3rd pharyngeal arch?

Answer 9

glossopharyngeal n.

Question 10

What nerves are derived from the 4th pharyngeal arch?

Answer 10

Vagus n.: superior laryngeal n.

Question 11

What nerves are derived from the 6th pharyngeal arch?

Answer 11

Vagus n.: recurrent laryngeal n.