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micro neuroanatomy > Development Of Special Senses > Flashcards

Development Of Special Senses Flashcards

1
Q

Where does the eye develop

A

Diencephalon

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2
Q

Neuroectoderm will differentiate into

A

Retina
Posterior layer of the iris
Optic nerve

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3
Q

Surface ectoderm forms what

A

Lens of the eye

Corneal epithelium

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4
Q

Neural crest cell will differentiate into what

A

Choroid
Sclera
Corneal endothelium

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5
Q

at what week the optic grooves are seen

A

4th week

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6
Q

The optic groove will invaginate into what

A

Optic vesicles

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7
Q

Optic vesicles will induce development of what

A

Lens placode (primordium

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8
Q

What is a local thickening in the embryonic ectoderm

A

Placode

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9
Q

When the lens placode will invaginate into

A

Lens pit

Lens vesicle

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10
Q

Neural retina is what type of layer

A

Inner thicker layer

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11
Q

Outer layer thinner layer will come from the

A

Retinal pigment epithelium

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12
Q

Faith of the optic stalk

A

Optic nerve

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13
Q

What regulates the differentiation of the eye and the optic stalk

A

Pax6 - eyes

Pax 2 - optic stalk

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14
Q

What occurs if the choroid fissure fails to close

A

Coloboma

Cat’s eye

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15
Q

What can result from intrauterine infections

A

Microphthalmia

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16
Q

Absence of one eye

A

Anopthalmia

17
Q

Affected with pax 6

A

Congenital ….

18
Q

Where does the pinna proliferate from

A

Pharyngeal arches 1 and 2

19
Q

Which part of the ear is the first to develop

A

Otic placode

20
Q

Otic placode will invaginate into

21
Q

Otic pit when fused will form

A

Otic vesicle

22
Q

What are the part of the otic vesicle

A

Dorsal ultricular

Ventral Saccular

23
Q

What happens at the 6th week of development

A

Cochlear duct will form organ of corti

24
Q

Which is derived from the first pharyngeal pouch

A

Tubo tympanic membrane

25
Q

Ossicles are derived from

A

1st Pharyngeal Arch - malleus and incus

2nd pharyngeal arch -
Stapes q

26
Q

What is derived from 1st pharyngeal groove

A

External acoustic meatus

27
Q

What are the 3 sources of the external ear

A

Ectoderm 1 1st PG

Endoderm - tubo tympanic recess

28
Q

Other name of Mandibularfacial dysostosis

A

Teacher Colin’s syndrome

29
Q

What is affected in Treacher Collin’s

A

1st Pharyngeal Arch

30
Q

1st pharyngeal arch derivatives

A

Malleus

Incus

31
Q

Pharyngeal arches 2

A

Facial expressions and stapes

32
Q

1st Pharyngeal pouches

A

Epthelium of the auditory tube and middle ear cavity

micro neuroanatomy (8 decks)

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