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Nervous System > Topography of the Brain > Flashcards

Topography of the Brain Flashcards

1
Q

What is white matter?

A

Myelinated axons

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2
Q

What is grey matter?

A

Neuronal cell bodies

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3
Q

What is a neuronal cell body called within the CNS?

A

Nucleus

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4
Q

What is a neuronal cell body called outside the CNS?

A

Ganglion

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5
Q

What are the major arteries that supply the brain?

A

Internal carotids and vertebral arteries

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6
Q

What is the function of the Circle of Willis?

A

It protects against occlusion of the large arteries

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7
Q

Which parts of the brain does the anterior cerebral artery supply?

A

Medial aspects of the cerebral hemispheres (NOT the occipital lobe)

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8
Q

Which parts of the brain does the middle cerebral artery supply?

A

Lateral aspects of the cerebral hemispheres

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9
Q

Which parts of the brain does the posterior cerebral artery supply?

A

Inferior aspect of the cerebral hemispheres and occipital lobe

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10
Q

What is the venous drainage of the brain?

A

Deep and Superficial veins > Dural Sinuses > IJV

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11
Q

How does the brain develop embryonically?

A

It forms from the cranial end of the neural tube

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12
Q

What are the 3 primary vesicles?

A

Prosencephalon (forebrain), mesencephalon (midbrain) and rhombencephalon (hindbrain)

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13
Q

Which cranial nerves exit from the brainstem?

A

3-12

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14
Q

What are the functions of the brainstem

A

Pathways between the higher and lower centres, innervation of the head and neck (cranial nerves) and brainstem centres produced the automatic behaviours essential for survival (respiration, heart rate etc.)

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15
Q

What are the surface features of the medulla?

A

Pyramids, olives (laterally), inferior cerebellar peduncle and CrN 9-12

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16
Q

What are the surface features of the pons?

A

Middle cerebellar peduncle and CrN 5-8

17
Q

What are the surface features of the midbrain?

A

Cerebral peduncle, superior cerebellar peduncle, corpora quadrigemina (superior and inferior colliculus) and CrN 3-4

18
Q

Which nerve is the only cranial nerve to originate posteriorly>

A

IV (Trochlear)

19
Q

What seperates the cerebellar hemispheres?

A

Vermis

20
Q

How is the cerebellum connected to the brainstem?

A

Cerebellar peduncles (x3)

21
Q

What are the functions of the cerebellum?

A

Posture maintenance and fine tuning motor activity

22
Q

Where is the diencephalon found?

A

Deep within the cerebral hemispheres around the III ventricle

23
Q

What is the function of the thalamus?

A

It is a sensory relay station

24
Q

What are the functions of the hypothalamus?

A

Autonomic control, body temperature regulation, regulation of food intake, regulation of water balance and thirst, regulation of sleep-wake cycle and control of endocrine function

Nervous System (16 decks)

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