H&N - Embryo Flashcards
0
Q
1st Arch: skeletal (Meckel’s cartilage)
A
- Maxilla
- Zygomatic bone
- Squamous part of temporal bone
- palatine bone
- ant ligament of malleus
- Incus
- Malleus
- Sphenomandibular ligament
- Spine sphenoid
- Mandible
1
Q
1st Arch: Nerve
A
Mandibular (CN V3)
2
Q
1st Arch: Mesoderm
A
MAST:
- masseter
- temporalis
- medial pterygoid
- lateral pterygoid
MATT:
- Myolohyoid
- Ant belly digastric
- Tensor tympani
- Tensor veli palatini
3
Q
1st cleft/groove
A
External auditory meatus
4
Q
1st membrane
A
Tympanic membrane
5
Q
1st Phryngeal pouch
A
- Eustachian tube
- Middle ear/Tympanic cavity
- Mastoid ear cells
6
Q
2 arch: nerve
A
Facial
7
Q
2st Arch: Skeletal
A
- Stapes
- Styloid process
- stylohyoid ligament
- Hyoid bone (lesser Cornu & upper body)
8
Q
2nd arch: mesoderm
A
- Stapedius
- Facial expression m
- Post belly digastric
- Stylohyoid
- Platysma
9
Q
2nd Pouch
A
- Palatine Tonsil
- Tonsilar sinus
10
Q
3rd arch
A
Glossopharyngeal (CN IX)
11
Q
3rd arch: Skeletal
A
- Hyoid bone (lower body & greater Cornu)
12
Q
3 arch: Mesoderm
A
Stylopharyngeus
13
Q
3rd pouche
A
- Thymus
- Inferior parathyroid
14
Q
4th arch: nerve
A
Superior Laryngeal (CN X)
15
Q
4th arch: skeletal
A
Laryngeal Cartilage
16
Q
4th arch: mesoderm
A
Cricothyroid
17
Q
4th Pouche
A
- Superior parathyroid
- C-cells of thyroid
18
Q
6th arch: nerve
A
Recurrent laryngeal nerve
19
Q
6th arch: skeletal
A
Laryngeal cartilage except epiglottis (from hypopharyngeal eminence)
20
Q
6th arch: mesoderm
A
- Intrinsic laryngeal m (except crycothyroid)
- Crycopharyngeus
- Striated muscle of upper esophagus
21
Q
2nd, 3rd, 4th clefts/grooves
A
Cervical sinus in development but Normally obliterates
