Central Nervous System Flashcards

1
Q

True/False: The location of information processing is different for each individual

A

False - it’s the same

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2
Q

True/False: The brain is a complex organ and we do not know everything about it yet

A

True

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3
Q

What are the four major divisions of the brain?

A

Frontal, parietal, occipital, temporal

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4
Q

What structure connects the left and right hemispheres of the cerebrum?

A

The corpus callosum

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5
Q

What does the corpus collosum do?

A

Allows communication between the 2 atmospheres of the brain

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6
Q

The bumps of the cerebrum are called?

A

Gyri

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7
Q

The grooves of the cerebrum are called?

A

Sulci

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8
Q

What is the occipital lobe associated with?

A

Vision

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9
Q

What is the parietal lobe associated with?

A

Sensation of touch and language

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10
Q

What is the temporal lobe associated with?

A

Receiving and processing sensory inputs, especially hearing

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11
Q

What is the frontal lobe associated with?

A

Planning, attention, short term memory voluntary movement and motivation

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12
Q

Where is the cerebral cortex?

A

Superficial layer of the cerebrum

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13
Q

What is the cerebral cortex made of?

A

Grey matter

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14
Q

What is grey matter?

A

Matter that is made up of dendrites and axon bodies

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15
Q

What are the 3 functions of the cerebral cortex?

A

Sensory (touch, pressure, temperature)
Motor (deciding, planning)
Association (receive input from and send output)

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16
Q

Where is the somaosensory area of the brain?

A

Parietal lobe

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17
Q

Which part of the sensory area determines type, intensity, location or a stimulus?

A

The primary somatosensory cortex

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18
Q

What part of the sensory area integrates new information with sorted (memory) information?

A

Somatosensory association area

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19
Q

Which lobe is the motor cortex located in?

A

Frontal lobe

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20
Q

What does the premotor area of the motor cortex do?

A

It’s where the panning of skeletal muscles occurs

21
Q

What does the primary motor cortex do?

A

Sends impulses down the spinal cord towards skeletal muscles

22
Q

Where is the prefrontal cortex?

A

Frontal lobe

23
Q

What can the prefrontal cortex do?

A

Integrative functions eg. Cognition, memory, planning etc.

24
Q

True/False: Basal nuclei are made of grey matter

A

True

25
Q

What common disease is associated with degeneration of the basal nuclei?

A

Parkinson’s Disease

26
Q

What are the 2 parts of the diencephalon?

A

Thalamus and hypothalamus

27
Q

Which part of the diencephalon regulates consciousness and sleep?

A

Thalamus

28
Q

Which part of the diencephalon controls the endocrine system?

A

Hypothalamus

29
Q

Where does the hypothalamus send signals for hormone release into the body?

A

To the pituitary gland

30
Q

What is the lambic system involved with?

A

Emotion, behaviour, motivation, long-term memory

31
Q

What are the parts of the brain stem?

A

Midbrain, pons, medulla oblongata, spinal cord

32
Q

What does the brainstem do?

A

Connects the brain with the spinal cord. Process motor signals from the brain.

33
Q

What is the name given to the second largest structure of the brain, also called the ‘little brain’?

A

Cerebellum

34
Q

What are the 3 layers of the meninges?

A

Dura mater, arachnoid mater, Pia mater

35
Q

What is the fluid produced by cells that protects the brain and spinal cord from blows and trauma?

A

Cerebrospinal fluid (CSF)

36
Q

What does the brain barrier (BBB) do?

A

Protection of the brain, it allows glucose, amino acids and some electrolytes to passively diffuse across

37
Q

What are some substances that affect the nerves cells in the brain by passing through the BBB?

A

Alcohol, cocaine and heroin

38
Q

What is the term associated to the brain’s ability to self repair?

A

Neuroplasticity

39
Q

Which bony feature does the spinal cord reside?

A

Through the vertebral foramen of the vertebrae

40
Q

How many spinal segments are there?

A

31

41
Q

True/False: The H-Shaped core of the spinal cord is made of white matter?

A

False - it’s grey matter

42
Q

Which neurons are found in the anterior horns of the spinal cord?

A

Motor neurons

43
Q

Where are the 2nd order (sensory) neurons found?

A

Posterior horns

44
Q

What neurons are found within the grey matter of the spinal cord?

A

Interneurons

45
Q

What do interneurons do?

A

Connects all segments of spinal cord

46
Q

What are spinal reflexes?

A

Autonomic responses to a change in environment

47
Q

What is typically an effector in a spinal reflex?

A

A muscle which produces a response

48
Q

Give an example of the crossed extensor reflex

A

When signals are sent to the opposite side of the body eg. Stepping on a pin and the opposite leg reflexing to extend