Session 3: Basics of the Central Nervous System Flashcards

1
Q

Functions of the midbrain (mesencephalon).

A

Eye movements and reflex responses to sound and vision.

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2
Q

Functions of pons.

A

Feeding like mastication and sucking reflex.

Sleep

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3
Q

Functions of the medulla.

A

Cardiovascular and respiratory centres.
Contains a major motor pathway (medullary pyramids).
The medullary pyramids will decussate aka cross over.

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4
Q

What is sulcus?

A

A groove in the brain separating adjacent gyri.

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5
Q

What is a gyrus?

A

A ridge or fold in the brain.

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6
Q

What is a fissure?

A

A large split between adjacent large areas of the brain.

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7
Q

Functions of the frontal lobe.

A

Higher cognition
Motor function
Speech

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8
Q

Functions of the parietal lobe.

A

Sensation

Spatial awareness

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9
Q

Functions of the temporal lobe.

A

Memory, smell and hearing

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10
Q

Functions of the occipital lobe.

A

Vision

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11
Q

Functions of the cerebellum.

A

Coordination and motor learning.

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12
Q

What is the optic chiasm?

A

A site where fibres in the visual system cross over.

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13
Q

What is the uncus?

A

Part of the temporal lobe and the site of olfactory cortex. This can hearniate and compress the midbrain and compress the oculomotor nerve.

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14
Q

What are the medullary pyramids?

A

Location of descending motor fibres.

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15
Q

What is the corpus callosum?

A

Fibres connecting the two cerebral hemispheres to interact with each other.

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16
Q

What is the thalamus?

A

Sensory relay station projecting to sensory cortex.

17
Q

What is the hypothalamus?

A

Essential centre for homeostasis.