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Embryology > Brain & CN Development > Flashcards

Brain & CN Development Flashcards

1
Q

In the 5th week of development, 3 swellings called ________ __________ appear at the cranial end of the neural tube

A

primitive vesicles

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2
Q

The three primitive vesicles give rise to all structures of

A

brain, cerebellum, and ventricular system

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3
Q

Prosencephalon secondary vesicle(s)

A

telencephalon and diencephalon

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4
Q

Mesencephalon secondary vesicle(s)

A

mesencephalon

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5
Q

Rhombencephalon secondary vesicle(s)

A

metencephalon and myelencephalon

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6
Q

Telencephalon neural derivatives

A

cerebral hemispheres and globus pallidus (cerebrum)

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7
Q

Telencephalon cavity derivatives

A

lateral ventricle

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8
Q

Diencephalon neural derivatives

A

Thalamus, hypothalamus, and epithalamus

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9
Q

Diencephalon cavity derivatives

A

third ventricle (eye cup)

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10
Q

Mesencephalon neural derivatives

A

midbrain

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11
Q

Mesencephalon cavity derivatives

A

cerebral aqueduct

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12
Q

Metencephalon neural derivatives

A

pons & cerebellum

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13
Q

Metencephalon cavity derivatives

A

Upper part of 4th ventricle

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14
Q

Myelencephalon neural derivatives

A

medulla

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15
Q

Myelencephalon cavity derivatives

A

lower part of 4th ventricle/central canal

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16
Q

Formation of brain flexures occurs during the 4th week due to

A

rapid growth & head folding

17
Q

Midbrain flexure (primary) occurs

A

early in the area of the mesencephalon

18
Q

Cervical flexure (primary) occurs

A

where the hindbrain meets the spinal cord

19
Q

Pontine flexure (secondary) occurs

A

posterior to the pons and medulla as the roof thins out & the 4th ventricle opens

20
Q

Choroid plexus

A

produces CSF

21
Q

How is the choroid plexus formed?

A

It comes from vascular pia mater

22
Q

Sensory is

A

dorsal & lateral

23
Q

Motor is

A

ventral & medial

24
Q

The alar plate and basal plate is separated by

A

sulcus limitans

25
Q

Myelencephalon motor components

A

Glossopharyngeal nerve, vagus nerve, accessory nerve, and hypoglossal nerve

26
Q

Myelencephalon sensory components

A

Glossopharyngeal nerve and vagus nerve

27
Q

Metencephalon motor components

A

Trigeminal nerve, abducens nerve, facial nerve

28
Q

Metencephalon sensory components

A

trigeminal nerve, facial nerve, vestibulocochlear nerve

29
Q

mesencephalon motor components

A

occulomotor nerve, trochlear nerve

30
Q

Mesencephalon sensory components

A

sensory cells of trigeminal nerve, mandibular division contains somatic afferents from muscles of mastication

31
Q

Telencephalon nerve

A

olfactory nerve

32
Q

diencephalon nerve

A

optic nerve

33
Q

Eye and optic nerve are outgrowths from

A

the diencephalon

34
Q

outer layer of optic cup will become

A

retinal pigment epithelium

35
Q

Inner layer of optic cup will become

A

neural retina

Embryology (8 decks)

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