Block 2

Question 1

What is the boarder called between lip tissue and facial tissue?

Answer 1

Vermillion boarder

Question 2

What is the corner of the mouth/lips called?

Answer 2

Labial Commissure

Question 3

Name the 5 main prominences of facial development

Answer 3

White = frontonasal prominence

Green = median nasal prominence

Purple = lateral nasal prominence

Gold = maxillary prominence

Brown = mandibular prominence

Question 4

Describe the progression of the nasal cavity

Answer 4

Nasal prominence, Nasal pit (Ectodermal invagination) Nasal sac (Ectoderm)

Question 5

Describe the progression of the oral cavity

Answer 5

Stomatodeum

Question 6

The __________degrades between the oral and nasal cavities

Answer 6

Oronassal Membrane

Question 7

The sinuses are formed from outgrowths of nasal cavity called ________

Answer 7

Diverticulations

Question 8

Name the 4 sinuses

Answer 8

Ethmoid Frontal Sphenoid Maxillary

Question 9

When do the sinuses develop?

Answer 9

Certain sinuses develop late in fetal period others take years to develop

Question 10

What are the purposes of the sinuses?

Answer 10

Humidifies air Speech Lightens Cranium while maintaining strength

Question 11

The nasal cavity is lined with a respiratory mucosa. Name the layers of cells which are above the basement membrane.

Answer 11

Cillia Pseudostratified columnar epithelium Goblet cells

Question 12

What type of tissue is found below the basement membrane? What is it’s purpose?

Answer 12

Connective tissue - Lamina Propria Warms the air

Question 13

How are the Paranasal sinuses different than the typical nasal mucousa?

Answer 13

Thinner than the nasal mucosa with fewer goblet cells

Question 14

Name the cartilage of the first branchial arch associated with the formation of the mandible

Answer 14

Meckel’s cartilage

Question 15

The two cartilages (of Meckel’s cartilage) do not meet at the midline but are separated by a thin line of cartilage called the ____

Answer 15

Symphysis

Question 16

Describe the bone formation that follows the presence of Meckel’s cartilage

Answer 16

Mesenchyme cells congregate at the symphysis, intramembranous ossification is triggered and begins bone creation

Question 17

Most of Meckel’s cartilage is reabsorbed entirely but a portion may be left in the _____ and ______

Answer 17

posterior extremity – malleolus of the inner ear; the sphenomandibular ligament

Question 18

The primary palate formation comes from the joining of the medial ______. This joining creates the ________.

Answer 18

nasal prominences intermaxillary segment

Question 19

Only after the development of the ________can oral and nasal cavities by distinguished.

Answer 19

secondary palate

Question 20

True or False The secondary palate contains the hard and soft palate

Answer 20

True

Question 21

The secondary palate is made from which three features?

Answer 21

2 palentine shelves Nasal septum

Question 22

Name the 4 steps in the completion of the palate

Answer 22

Lateral Palatal Shelves & Nasal Septum form Ventrally (Downward) Posterior part of primary plate meets the secondary palate and gradually fuse Mandibular growth releases Tongue Nasal Septum and Shelves fuse by 12th week

Question 23

Describe the anatomical location of the primary palate

Answer 23

From Incisive foreman (small dark hole) to distal lateral incisors

Question 24

Describe the anatomical location of the secondary palate

Answer 24

Incisive foreman to Uvula Includes Maxilla, Palatine bones, Soft Palate, and Uvula

Question 25

What is the result of processes failing to fuse?

Answer 25

Cleft lip/palate

Question 26

The tongue is derived from which arches?

Answer 26

The 1, 2 and 3.

However, Arch 2 is eventually overgrown by arch 3

Question 27

The anterior 2/3 of the tongue is ____derm and the posterior 1/3 is _____derm

Answer 27

Ectoderm Endoderm

Question 28

What is the anterior portion of the tongue derived from?

Answer 28

Lateral lingual swellings and the tuberculum impar

Question 29

What is the posterior portion of the tongue derived from?

Answer 29

Copula

Question 30

The tongue muscle is formed from _____

Answer 30

occipital somites which migrate into the tongue area

Question 31

A hairy tongue is the result of ________. It is treated with __________.

Answer 31

an accumulation of bacterial growth proper oral hygiene