Embryology

Question 1

What do pharyngeal arches develop into?

Answer 1

Face and neck

Question 2

When do the pharyngeal arches develop and in what order?

Answer 2

Week 4

1 first- most cranial

Question 3

How many pharyngeal arches are there?

Answer 3

5

Numbered 1-6 with no fifth!

Question 4

Each pharyngeal arch consists of 3 tissue types. What are these?

Answer 4

Mesenchymal tissue
Neural crest cells
Artery

Question 5

What do the neural crest cells form?

Answer 5

Skeletal components of face

Question 6

What do the mesenchymal tissues form?

Answer 6

Muscles of the face and neck

Question 7

Each arch is associated with a nerve. What is arch 1 associated with?

Answer 7

Trigeminal

Question 8

Arch 2 = what nerve?

Answer 8

Facial

Question 9

Arch 3= what nerve?

Answer 9

Glossopharyngeal

Question 10

Arch 4+6 = what nerve?

Answer 10

vagus

Question 11

What bones does the 1st arch form?

Answer 11

Maxilla 
Zygoma 
Temporal
Malleus
Mandible

Question 12

What is formed in the 2nd arch?

Answer 12

Stapes

Stylohyoid ligament

Question 13

Which pharyngeal pouch is responsible for the formation of the Eustachian tube and tympanic membrane?

Answer 13

1st pharyngeal pouch

Question 14

The palatine tonsil comes from which pharyngeal pouch?

Answer 14

2nd pharyngeal pouch

Question 15

What embryological structure does the thyroid gland come from?

Answer 15

Foramen caecum