embryology of head and neck

Question 1

when does the buccopharyngeal membrane rapture

Answer 1

(ruptures at 26 days)

Question 2

Meninges membranes are from which cells of neuroectoderm

Answer 2

neural crest cells

also satellite cells

Question 3

During week 5 migration of cardiac ____

Answer 3

neural crest cell

Question 4

Arch 1 –> ?
Bones:

Answer 4

Maxilla
mandible
Squamous temporal
malleus and incus

Question 5

Arch 2–> ?
Bones:

Answer 5

stapes & styloid process
lesser horn & body of hyoid bone

Question 6

Arch 3: ?
Bone

Answer 6

greater horn & body of hyoid

Question 7

Arch 4 and 6:

Answer 7

Larynx

Question 8

Muscles:
Arch 1:

Answer 8

mastication, mylohyoid,
ant digastric, tensor
tympani, tensor veli palatini

Question 9

muscles of ______ arises from 2nd pharyngeal arch.

Answer 9

facial expression,
stapedius, stylohyoid, post
digastric

Question 10

• Pharyngeal arches 4-6 give rise to which muscles

Answer 10

– pharynx, larynx,
levator veli palatini,
oesophagus

Question 11

Which nerves innervate the 4-6 pharyngeal arch

Answer 11

vagus nerve

Question 12

When do tongue develop

Answer 12

(end of 4th week)

Question 13

development of the tongue:
Arch 1:
Arch 3:

Answer 13

1- anterior 2/3
3- posterior 1/3 of the tongue

Question 14

2 tastebuds

Answer 14

(circum)vallate *
fungiform *

Question 15

what somites does muscles of the tongue

Answer 15

occipital somites