Neuro 1: Emb Of Nervous System

Front 1

What induces formation of the neural plate from neuroectoderm?

Back 1

notochord

Front 2

What does the neural plate form?

Back 2

Neural tube and Neural crest

Front 3

When does myelination begin?

Back 3

Around end of week 3

Front 4

What neuropore closes first?

Back 4

Cranial (24 days) followed by caudal at 26

Front 5

Anencephaly or Meroanencephaly

Back 5

Failure of the Cranial Neuropore to close

Front 6

Spina Bifida

Back 6

Failure of the Caudal Neuropore to close

Front 7

What forms the CNS?

Back 7

Neural Tube

Front 8

What forms the PNS?

Back 8

Neural Crest

Front 9

Cranial to 4th pair of somites forms what?

Back 9

brain

Front 10

What will the neural canal form?

Back 10

ventricles and central canal

Front 11

What demarcates the boundary between sensory and motor structures?

Back 11

sulcus limitans

Front 12

What cells are mitotic?

Back 12

Glial cells

Front 13

What lines the ventricular layer of the neural tube?

Back 13

neuroepithelial cells

Front 14

What is the initial entire thickness of the neural tube?

Back 14

Ventricular layer

Front 15

What is the ventricular layer a source of?

Back 15

Globlasts and neuroblasts

Front 16

What is the fate of the ventricular layer after the neurons and glia are formed?

Back 16

ependyma layer lining the central canal of spinal cord

Front 17

What layer becomes gray matter of the spinal cord?

Back 17

Intermediate

Front 18

What is located in the gray matter of the Intermediate layer?

Back 18

ALL spinal cord nerve cell bodies

Front 19

What becomes the white matter of the spinal cord?

Back 19

Marginal layer

Front 20

What layer of the spinal cord includes axons?

Back 20

Marginal layer (white)

Front 21

What are the two divisions of the intermediate layer of the neural tube?

Back 21

Alar and Basal plates

Front 22

What plate will form the sensory neurons and where will they be located?

Back 22

Alar plate, dorsal horm

Front 23

What plate will form the motor neurons and where will they be located?

Back 23

Basal plate; ventral horns = skeletal muscle; lateral horms = preganglionic neurons of the ANS

Front 24

What contain NO neuroblasts and form a route for axons to cross the midline of the spinal cord?

Back 24

Floor plate in Basal Plate

Front 25

Pseudounipolar

Back 25

Sensory

Front 26

Are there synapses in the sensory ganglia?

Back 26

NO NO NO NO NO!

Front 27

Are sensory neurons PNS or CNS?

Back 27

PNS

Front 28

Where are sensory ganglia (dorsal root ganglia) derived?

Back 28

neural crest

Front 29

Where are the central processes of the sensory nerves?

Back 29

Dorsal root

Front 30

When do you perform a fuel system contamination inspection?

Back 30

When 25% of the total fuel baffles have been removed from any fuel tamk, or 40 flight hours after new foam installation

Front 31

Where does the spinal cord end in newborns? Adults?

Back 31

L2-L3 in newborns; L1 in adults

Front 32

Where are spinal taps preformed?

Back 32

between L 3 and L4 or L4 and L5

Front 33

Prosencephalon

Back 33

Forebrain

Front 34

Mesencephalon

Back 34

Midbrain

Front 35

Rhomencephalon

Back 35

Hindbrain

Front 36

Metencephalon

Back 36

Cerebellum and pons

Front 37

Myelincephalon

Back 37

Medulla

Front 38

Brain stem

Back 38

Medullay, pons and Midbrain

Front 39

Cephalic flexure

Back 39

Midbrain flexure region

Front 40

Cervical flexure

Back 40

junction of hindbrain and spinal cord

Front 41

Part of the medulla that underlies the 4th ventricle

Back 41

OPEN medulla

Front 42

What forms the ependymal lining of the VENTRICLES?

Back 42

Ventricular layer of the brain

Front 43

What forms the gray matter of the brain?

Back 43

Alar and basal plates of the intermediate layer

Front 44

What forms the pathways of nerve tracts and then white matter of the BRAIN?

Back 44

Marginal layer

Front 45

What thicken to form the cerebellum?

Back 45

Dorsilateral parts of the Alar plate

Front 46

Diencephalon develops from the what aspect of the prosencephalon?

Back 46

Caudal

Front 47

Telencephalon develops from what aspect of the prosencephalon?

Back 47

Rostral

Front 48

Because the ptic nerve is not associated with a brain stem nucleus...

Back 48

It is a fiber tract of the CNS (outgrowth of the diencephalon)

Front 49

What is the dual origin of the pituitary?

Back 49

Ectodermal and neuroectoderm

Front 50

What is a downward extension from the floor of the diencephalon?

Back 50

Infundibulum

Front 51

What is the infundibulum made of?

Back 51

neuroectoderm

Front 52

What gives rise to the neurohypophysis?

Back 52

Infundibulum

Front 53

What makes up most of the posterior lobe of the pituitary?

Back 53

Infundibulum

Front 54

What is most of the posterior lobe of the pituitary?

Back 54

Neurohypophysis

Front 55

What kind of tissue is in the neurohypophysis?

Back 55

Neural tissue

Front 56

What is an outgrowht from the ectodermally lined roof of the stomodeum?

Back 56

Rathke's pouch

Front 57

What give rise to the adenohypophysis?

Back 57

Rathke's pouch (oral ectoderm)

Front 58

What makes up most of the anterior lobe of the pituitary?

Back 58

Adendohypophysis

Front 59

What kind of tissue makes up the adendohypophysis?

Back 59

Glandular

Front 60

Is cerebral cortex white or gray matter?

Back 60

Gray (opposite of spinal cord where gray is on the inside)

Front 61

The Olfactory tract is also not associated with a brain stem nucleus, thus...

Back 61

it is an outgrowth of the telencephalon and a fiber tract of the CNS

Front 62

Pia + Ependyma

Back 62

Tela chorodea

Front 63

What cranial nerves are on the brain stem?

Back 63

3-12

Front 64

What cranial nerve is formed from the telencephalon?

Back 64

1

Front 65

What cranial nerve is formed from the diencephalon?

Back 65

2

Front 66

What cranial nerves are on the mesencephalon?

Back 66

3 and 4

Front 67

What cranial nerves are GSE?

Back 67

3,4,6,12

Front 68

What type of cells form most of the PNS?

Back 68

Neural crest cells

Front 69

Where are the postganglionic neurons of the ANS located?

Back 69

PNS

Front 70

Where are the preganglionic ANS (para and sympth) neurons located?

Back 70

CNS (Derived from nerual tube)

Front 71

What is the cause of Hirschsprung's disease or megacolon?

Back 71

Failure of migration of neural crest cells into the colon, thus parasympathetic ganglia do not form (lack of peristalsis)

Front 72

What do not form in Hirschsprung's disease?

Back 72

Parasympathetic ganglia

Front 73

Due to failure of the neural tube to close resulting in exposure of the malformed neural tissue along the back of the head and body

Back 73

Cranioarchischisis

Front 74

Myelomeningocele

Back 74

Spina bifida

Front 75

Mildest form of spina bifida

Back 75

occulta (only malformation of vertebral arch --> nerural tube)

Front 76

Accompanies spina bifida where the cerebellum and caudal brainstem are elongated and protrude into the foramen magnum causing what?

Back 76

Arnold-Chiari malformation causing hydrocephalus

Front 77

Failure of the normal development of the forebrain such that it is not divided into two hemishperes

Back 77

Holoprosencephaly (HPE)

Front 78

Tubular cavitation of the spinal cord with loss of pain and temp sensation over the shoulders and down the arms

Back 78

Syringomyelia