510-3

Question 0

What is the stomodeum/stomatodeum?

Answer 0

Location where the oral cavity will be. Its separated from the opening of the gut by the buccopharyngeal membrane

Question 1

What is branchial?

Answer 1

An old name to describe the pharyngeal region of fish/amphibians that gives rise to the gills

Question 2

What is intramembranous ossification?

Answer 2

When embryonic connective tissue is replaced by bone. Usually found in the flat bones of the skull

Question 3

What is endochondral ossification?

Answer 3

When cartilage is replaced by bone. Usually in long bones that use some sort of model for growth.

Question 4

What is the mandibular canal?

Answer 4

Area of the mandible where the bone grows completely around the inferior alveolar nerve.

Question 5

Explain Ramus development.

Answer 5

The ramus forms through endochondral ossification. The ramus grows away from Meckel’s cartilage at the lingula.

Question 6

Explain condylar cartilage development.

Answer 6

The condylar cartilage forms independently and then fuses with the mandibular condyle.

Question 7

What is the coronoid cartilage?

Answer 7

Transient growth that disappears before birth

Question 8

1st Arch

Answer 8

maxilla
mandible
meckel's cartilage
malleus
incus
sphenomandibular ligament

Question 9

2nd Arch

Answer 9

Reichert's Cartilage
Stapes
Styloid process from Temporal Bone
Lesser horns of hyoid bone
Upper portion of hyoid bone

Question 10

3rd Arch

Answer 10

Greater horns of the hyoid

Lower part of the hyoid

Question 11

4th Arch

Answer 11

Cartilage of the Larynx

Question 12

1st Groove/Cleft

Answer 12

External auditory meatus

Question 13

1st Pouch

Answer 13

Tympanic Membran
Tympanic Cavity
Eustachian Tube
Mastoid Antrum

Question 14

2nd Pouch

Answer 14

Tonsils

Question 15

3rd Pouch

Answer 15

Inferior Parathyroid Gland

Thymus

Question 16

4th Pouch

Answer 16

Superior Parathyroid Gland

Ultimobrachial body

Question 17

1st Nerve

Answer 17

5 trigeminal nerve (mastication)

Question 18

2nd nerve?

Answer 18

7 Facial nerve (facial expression)

Question 19

3rd Nerve

Answer 19

9 glossopharyngeal nerve (straps of the neck/swallowing)

Question 20

4th nerve

Answer 20

10 vagus nerve (straps of the neck/ swallowing)

Question 21

Lateral Cervical Cysts

Answer 21

Develop when the 2nd, 3rd, or 4th clefts don’t obliterate completely

Question 22

Thyroid Gland

Answer 22

Formed from the oral tissue originating from the foramen cecum traveling down to below the larynx (thyroglossal duct)

Question 23

Follicular and Parafollicular Cells

Answer 23

follicular cells- produce T3 and T4

parafollicular cells- (C cells) produce calcitonin (derived from ultimobrachial body)

Question 24

Thyroglossal Cyst

Answer 24

Oral tissue that didn’t make it to the thyroid so are trapped along the thyroglossal duct located in the midline of the neck

Question 25

What are the 5 facial prominences?

Answer 25

1. ) Frontonasal
2. ) Medial Nasal
3. ) Lateral Nasal
4. ) Maxillary
5. ) Mandibular

Question 26

Nasolacrimal Groove

Answer 26

Groove between the lateral nasal prominence and the maxillary prominence

Question 27

Intermaxillary Segment

Answer 27

Region that results from pushing together the maxilla. Consists of the Philtrum of the upper lip, the 4 incisors on the maxilla and the primary palate

Question 28

Incisive Foramen

Answer 28

Midline between the primary and seconday palate

Question 29

Palatine Shelves

Answer 29

Grow on either side of the tongue and fuse to form the secondary palate

Question 30

Ankyloglossia

Answer 30

Condition in which the frenulum may extend to the tip of the tongue

Question 31

Tongue Development

Answer 31

Body of the tongue develops from the lateral lingual swelling of the first arch. The root of the tongue develops from the copula of the 3rd arch.