Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

ENT > Development of the pharyngeal arches and ear > Flashcards

Development of the pharyngeal arches and ear Flashcards

1
Q

What forms the definitive endoderm and mesoderm?

A

Invagination of epiblast cells through the primitive streak

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the three main groups of mesoderm?

A

Paraxial
Intermediate
Lateral Plate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

When does arch 1 develop?

A

Day 22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When does arch 2 +3 develop?

A

day 24

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

When do arch 4-6 develop?

A

Day 29

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the three components of the pharyngeal apparatus?

A
  1. core pharyngeal arch (mesenchymal tissue)
  2. external pharyngeal cleft (ectoderm)
  3. Internal pharyngeal pouch (endoderm)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What do neural crest cells form?

A

Skeletal components of the face

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the components of a pharyngeal arch?

A

Core of mesanchyme (musculature of the face), neural crest cells (skeletal components of the face), cranial nerve component, artery (aortic arch artery)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the skeletal elements of the 1st pharyngeal arch?

A
  • Maxillary process
  • maxilla
  • zygomatic bone
  • squamous portion of temporal bone
  • Mandibular process
  • Meckels cartilage
  • Incus and malleus
  • mandible
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the nerve supply to all musculature in the 1st pharyngeal arch?

A

CN V3

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What muscles arise from the 1st pharyngeal arch?

A 
-muscles of mastication
(masseter, temporalis, lateral pterygoid, medial pterygoid) 
-anterior belly of digastric 
-Mylohyoid
-Tensor Tympani 
-Tensor veli palatini
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the sensory supply to the skin of the face?

A

V1: ophthalmic
V2: maxillary
V3: mandibular

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the cartilage of the 2nd arch?

A

Reichert’s cartilage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What are the skeletal derivations of the second pharyngeal arch?

A 
Stapes
Styloid process of temporal bone
Stylohoid legament
Lesser horn of hyoid
Upper part of hyoid body
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are the muscular derivatives of the second pharyngeal arch?

A

Muscles of facial expression

  • posterior belly of digastric
  • stylohyoid
  • stapedius
  • auricular muscles
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are the skeletal derivatives of the 3rd pharyngeal arch?

A

Greater horn of hyoid

Lower part of hyoid bone

17
Q

What are the muscular derivatives of the 3rd pharyngeal arch?

A

stylopharyngeus

ENT (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions