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Flashcards in 510-3 Deck (32):
0

What is branchial?

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

1

What is the stomodeum/stomatodeum?

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

2

What is intramembranous ossification?

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

3

What is endochondral ossification?

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

4

What is the mandibular canal?

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

5

Explain Ramus development.

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

6

Explain condylar cartilage development.

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

7

What is the coronoid cartilage?

Transient growth that disappears before birth

8

1st Arch

maxilla
mandible
meckel's cartilage
malleus
incus
sphenomandibular ligament

9

2nd Arch

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

10

3rd Arch

Greater horns of the hyoid
Lower part of the hyoid

11

4th Arch

Cartilage of the Larynx

12

1st Groove/Cleft

External auditory meatus

13

1st Pouch

Tympanic Membran
Tympanic Cavity
Eustachian Tube
Mastoid Antrum

14

2nd Pouch

Tonsils

15

3rd Pouch

Inferior Parathyroid Gland
Thymus

16

4th Pouch

Superior Parathyroid Gland
Ultimobrachial body

17

1st Nerve

#5 trigeminal nerve (mastication)

18

2nd nerve?

#7 Facial nerve (facial expression)

19

3rd Nerve

#9 glossopharyngeal nerve (straps of the neck/swallowing)

20

4th nerve

#10 vagus nerve (straps of the neck/ swallowing)

21

Lateral Cervical Cysts

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

22

Thyroid Gland

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

23

Follicular and Parafollicular Cells

follicular cells- produce T3 and T4

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

24

Thyroglossal Cyst

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

25

What are the 5 facial prominences?

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

26

Nasolacrimal Groove

Groove between the lateral nasal prominence and the maxillary prominence

27

Intermaxillary Segment

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

28

Incisive Foramen

Midline between the primary and seconday palate

29

Palatine Shelves

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

30

Ankyloglossia

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

31

Tongue Development

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.