Development of the Face, Eye, and Ear

Question 1

this type of congenital defect accounts for 1/3 of all of them

Answer 1

craniofacial

Question 2

most clinically significant craniofacial teratogen

Answer 2

alcohol

Question 3

frontal nasal prominence gives rise to what

Answer 3

forehead

Question 4

maxillary prominence gives rise to what

Answer 4

maxilla and zygomatic bones

Question 5

mandibular prominence gives rise to what

Answer 5

mandibule

Question 6

primordial mouth

Answer 6

stomodeum

Question 7

form from thickening of surface ectoderm

Answer 7

placodes

Question 8

what canalizes to form the nasolacrimal duct

Answer 8

a solid cord

Question 9

the prominences form from what merging

Answer 9

mesenchyme

Question 10

what forms from the intermaxillary segment

Answer 10

primary palate

Question 11

forms the premaxillary portion

Answer 11

primary palate

Question 12

premaxillary segment contains what

Answer 12

4 front teeth

Question 13

forms the primordium of hard and soft palate

Answer 13

secondary palate

Question 14

posterior part of palate does not ossify and remains as

Answer 14

soft palate

Question 15

not enough proliferation of neural crest cells of the lip so they don’t fuse together

Answer 15

cleft lip

Question 16

most minor anomaly of clefting

Answer 16

cleft uvula

Question 17

due to failure of maxillary and mandibular processes to fuse

Answer 17

lateral cleft face

Question 18

due to failure of maxillary and lateral nasal process to face

Answer 18

medial cleft face

Question 19

2 parts of the skull

Answer 19

neurocranium
viscerocranium

Question 20

part of neurocranium that forms base of skull

Answer 20

cartilaginous

Question 21

part of neurocranium that surrounds the brain

Answer 21

membranous

Question 22

another name for part of neurocranium that forms base of skull

Answer 22

chondrocranium

Question 23

unossified mesenchyme

Answer 23

fontanelles

Question 24

most prominent fontanelles (part of membranous neurocranium)

Answer 24

anterior and posterior

Question 25

which two arches form the viscerocranium

Answer 25

1st and 2nd

Question 26

optic grooves invaginate to form what

Answer 26

optic vessels

Question 27

optic vesicle distal end expands and forms what

Answer 27

optic stalk

Question 28

surface ectoderm of eye forms

Answer 28

lens placodes

Question 29

optic vesicles invaginate to form goblet-shaped what that surround the lens vesicle

Answer 29

optic cups

Question 30

enclosed within the primordial optic nerve

Answer 30

hyaloid vessels (a. and v.)

Question 31

these individuals are sensitive to white light and they are missing tissue in the eye; a defective closure of retinal fissure

Answer 31

coloboma of the iris

Question 32

light passes through the retina on to what receptors

Answer 32

rods and cones

Question 33

what develops from wall of optic cup

Answer 33

retina

Question 34

plane of separation during a retinal detachment is between what layers

Answer 34

pigmented epithelium and layer of rods and cones

Question 35

develops from ectodermal placode

Answer 35

lens

Question 36

these fibers last a lifetime

Answer 36

primary lens

Question 37

these two muscles of the iris derived from neuroectoderm

Answer 37

dilator and sphincter pupillae m.

Question 38

develops from rim of optic cup

Answer 38

iris

Question 39

develops from buds of surface ectoderm

Answer 39

lacrimal glands

Question 40

eyelids and glands and eyelashes derived from

Answer 40

surface ectoderm

Question 41

microophthalmos

Answer 41

small eyes

Question 42

single median eye

Answer 42

cyclopia

Question 43

increase in CSF pressure slows venous return from retina and causes papillaedema of optic disc

Answer 43

edema of optic disc

Question 44

2 eye defects that come from rubella infections

Answer 44

glaucoma cataracts

Question 45

first of the 3 parts of the ear to develop

Answer 45

inner ear

Question 46

what forms otic placode

Answer 46

thickening of surface ectoderm

Question 47

what labyrinth forms first

Answer 47

membraneous labyrinth

Question 48

this is complex and allows us to hear

Answer 48

organ of corti

Question 49

tubotympanic recess develops from what pouch

Answer 49

1st pharyngeal pouch

Question 50

tensor tympani derived from what arch

Answer 50

1st

Question 51

stapedius m. derived from what arch

Answer 51

2nd

Question 52

external acoustic meatus develops from what groove

Answer 52

1st

Question 53

what 3 sources develop tympanic membrane

Answer 53

ectoderm mesenchyme endoderm

Question 54

congenital anomaly of ear where ossicles didn't form properly

Answer 54

conductive congenital deafness

Question 55

absence of auricle

Answer 55

anotia

Question 56

small auricle

Answer 56

microtia

Question 57

where should ears usually be in relation to eye

Answer 57

same height and lateral