Embryology

Question 1

pharyngeal pouch 1 ==>

pharyngeal membrane 1 ==>

pharyngeal groove 1 ==>

Answer 1

• epithelium of middle ear and auditory tube
• tympanic membrane
• epithelium of external ear canal

Question 2

pharyngeal pouch 2 ==>

pharyngeal membrane 2 ==>

pharyngeal groove 2 ==>

Answer 2

• epithelium of palatine tonsil crypts
• obliterated
• obliterated

Question 3

pharyngeal pouch 3 ==>

pharyngeal membrane 3 ==>

pharyngeal groove 3 ==>

Answer 3

• thymus + inferior parathyroid gland
• obliterated
• obliterated

Question 4

pharyngeal pouch 4 ==>

pharyngeal membrane 4 ==>

pharyngeal groove 4 ==>

Answer 4

• superior parathyroid glands + ultimobranchial body
  
  • 4 + 6 ==> laryngeal cartilages
• obliterated
• obliterated