Development Flashcards

(43 cards)

1
Q

What is the function of neutrons?

A

To transfer information rapidly from one part of the body to another

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2
Q

What does the CNS consist of?

A

The brain and spinal cord

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3
Q

What is the CNS protected by?

A

Cranium and vertebral column

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4
Q

What are the bundles of axons called that connect the CNS with all parts of the body?

A

Nerves

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5
Q

Where are the cell bodies of neurones in the CNS?

A

Grey matter

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6
Q

What is a compact aggregation of grey matter called?

A

Nucleus

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7
Q

What is the region of CNS tissue that contain axons but not neuronal cell bodies?

A

White matter

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8
Q

What do neurones develop from?

A

The dorsal ectoderm

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9
Q

What layer becomes the epidermis?

A

Ectoderm

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10
Q

The cells lining the neural tube constitute?

A

The neuroepithelium

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11
Q

What are the first populations of cells produced in the neural tube?

A

Neurones

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12
Q

What cells comprise the other cells of the nervous system that are not neurones?

A

Glia cells

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13
Q

What is the first type of glia cell?

A

Radial Glia

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14
Q

What are the three divisions of the brain at the end of the 4th week of development?

A

Prosencephalon, Mesencephalon and Rhombencephalon

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15
Q

What part of the brain is prosencephalon?

A

Forebrain

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16
Q

What part of the brain is mesencephalon?

A

Midbrian

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17
Q

What part of the brain is rhombencephalon?

A

Hindbrain

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18
Q

What are the five divisions of the brain at the end of the 5th week of development?

A

Telencephalon, Diencephalon, Mesencephalon, Metencephalon and Myelencephalon

19
Q

What does the myelencephalon become?

A

Medulla oblongata

20
Q

What does the metencephalon become?

A

Pons and cerebellum

21
Q

Is the thalamus grey matter or white matter?

22
Q

What part of the brain does the thalamus develop?

23
Q

What are the left and right halves of the telencephalon known as?

A

Cerebral hemispheres

24
Q

The lumen of the neural tube becomes?

A

The ventricular system

25
Where does the lateral ventricle develop?
In each cerebral hemisphere
26
Where is the third ventricle?
Diencephalon
27
What is the fourth ventricle bounded by?
The medulla, pons and cerebellum
28
What are the third and fourth ventricle connected by?
Cerebral aqueduct
29
Where does the first cervical flexure occur?
Junction of the rhombencephalon
30
Where does the mesencephalic flexure occur?
At the level of the midbrain
31
Where is the pontine flexure?
In the metencephalon
32
What is the function of the flexures?
Ensure that the optical axes of the eyes are at right angles to the axis of the vertebral column
33
What are the three meninges called?
Pia mater, arachnoid mater and dura mater
34
What meninges is closer to the nervous tissue?
Pia mater
35
What meninges lines the cranial cavity and spinal cord?
Dura mater
36
What is the space called between the inner two meningeal layers?
Subarachnoid space
37
What fluid is contained within the subarachnoid space?
Cerebrospinal fluid
38
What shape is the grey matter in, in the spinal cord?
H shape
39
Where are neuronal cell bodies located?
Grey matter
40
Where are myelinated axons located?
White matter
41
What cells in the hypothalamus synthesise hormones that enter the blood stream?
Neurosecretory cells
42
What are gyri?
Ridges
43
What are sulci?
Grooves