quiz on lecture 5

Question 1

formation of palate starts during fifth week of prenatal development within the embryonic period from two seperate embryonic structures

Answer 1

primary and secondary palate

Question 2

internal wedge that extends inferiorly and deep to nasal pits on inside of stomodeum

Answer 2

intermaxillary segment

Question 3

initially serves as a partial floor of nasal cavity and the nasal septum

Answer 3

intermaxillary segment

Question 4

intermaxillary segment was formed from

Answer 4

fusion of 2 medial nasal processes within the embryo

Question 5

the intermaxillary segment forms

Answer 5

the primary palate; which serves as a partial separation between the developing oral cavity and nasal cavities

Question 6

what could the primary palate also be known as?

Answer 6

primitive palate, globular process, premaxilla, median palatal process, intermaxillary segment

Question 7

the bilateral maxillary processes give rise to two palatal shelves

Answer 7

right and left lateral processes

Question 8

palatal shelf elevation occurs; palatal shelves were developing vertically do what?

Answer 8

flip up to move in horizontal direction

Question 9

the two lateral processes then do what

Answer 9

move medially toward each other fusing to form secondary palate

Question 10

the secondary palate will eventually form the what

Answer 10

posterior 2/3 of hard palate, maxillary canines and posterior teeth, posterior to incisive foramen, soft palate and uvula

Question 11

within the mucosa lining and deeper median palatine suture indicate line of fusion of palatal shelves

Answer 11

median palatine raphe

Question 12

the secondary palate will fuse with the primary palate; this forms the final palate during what week

Answer 12

12th week

Question 13

located at the junction of the primary palate and secondary palate meet; incisive papilla clinically over this

Answer 13

nasopalatine or incisive foramen

Question 14

a growth from the medial nasal processes also

Answer 14

nasal septum (like the primary palate)

Question 15

nasal septum =

Answer 15

chondrocytes

Question 16

what is formed by the first 4 branchial arches?

Answer 16

tongue

Question 17

arch one forms

Answer 17

body of tongue(ant. 2/3)

Question 18

arch 2, 3, ,4 forms

Answer 18

base of tongue

Question 19

what three parts are the body of tongue developed from

Answer 19

central tuberculum impar, and 2 lateral lingual swellings

Question 20

located in midline on floor of primitive pharynx

Answer 20

central tuberculum impar

Question 21

on each side of tuberculum impar

Answer 21

two lateral lingual swellings

Question 22

what are the lateral lingual swellings from?

Answer 22

growth of mesenchyme of 1st branchial arch

Question 23

line of fusion of 2 lateral lingual swellings

Answer 23

median lingual sulcus

Question 24

the body and base of tongue are separated by

Answer 24

terminal sulcus

Question 25

the base of the tongue is formed by the

Answer 25

copula overgrowing the 2nd branchial arch(hyoid arch)

Question 26

which 4 cranial nerves innervate the tongue

Answer 26

5,7,9,10

Question 27

terminal sulcus points back to a pit like depression

Answer 27

foramen secum

Question 28

from the foramen cecum arises cells

Answer 28

which migrate ventrally to form the thyroid

Question 29

epithelial duct that is attached from thyroid to tongue; cysts can occur here

Answer 29

thyroglossal duct

Question 30

worst cleft

Answer 30

have cleft lip with cleft palate

Question 31

mildest form of cleft

Answer 31

cleft uvula