Embryology

Question 1

Development happens in what pattern?

Answer 1

cranial to caudal

Question 2

Core pharyngeal arch is _______ and goes onto produce ______

Answer 2

mesoderm

musculature associated with each arch

Question 3

External pharyngeal cleft is ______ and goes onto form _______

Answer 3

ectoderm

Skin and nervous system

Question 4

Internal pharyngeal pouch is ________ and forms the __________

Answer 4

endoderm

floor of the pharynx

Question 5

What nerve is associated with 1st pharyngeal arch?

Answer 5

CNV2 and CNV3

Question 6

What nerve is associated with 2nd pharyngeal arch?

Answer 6

CN 7

Question 7

What nerve is associated with the 3rd pharyngeal arch?

Answer 7

CN 9

Question 8

What nerve is associated with the 4th pharyngeal arch?

Answer 8

CN 10

Question 9

Each pharyngeal arch will make all the ________

Answer 9

musculature that its nerve supplies

Question 10

1st pharyngeal cleft becomes the _______

Answer 10

external acoustic meatus (ear canal)

Question 11

2nd-4th clefts form the _____

Answer 11

cervical sinus and lose contact with the outside

Question 12

1st pharyngeal pouch forms the ________

Answer 12

middle ear, tympanic membrane and eustachian tube

Question 13

2nd pharyngeal pouch forms the _______

Answer 13

palatine tonsil

Question 14

3rd pharyngeal pouch forms the __________

Answer 14

inferior parathyroids and thymus

Question 15

4th pharyngeal pouch forms the _____________

Answer 15

superior parathyroid, thyroid gland and C cells