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Biology > Chapter 6 - CNS > Flashcards

Chapter 6 - CNS Flashcards

1
Q

3 things the Cerebrospinal Fluid does

A

Circulates Cavities
Shock absorber
Protection, support and transport

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2
Q

What is the Cerebrum

A

Biggest part of the brain

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3
Q

What is the outer surface of the brain made of?

A

Grey matter = cerebral cortex

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4
Q

What is below the cerebral cortex?

A

White matter

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5
Q

What is inside the cerebral cortex?

A

Grey Matter - Basal Ganglia

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6
Q

What are the ridges in the cerebrum known as?

A

Convolutions

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7
Q

What are Sucli?

A

Shallow down folds in the cerebrum

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8
Q

What is the name for deep down folds?

A

Fussures

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9
Q

What almost seperate a the cerebrum into two?

A

Longitudinal Fissure

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10
Q

What joins the 2 hemispheres together?

A

White matter - large bundle of transverse fibres

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11
Q

3 things that protect the CNS

A

Bone
Membrane Fluid - meninges
Cerebrospinal Fluid

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12
Q

What are the 4 lobes of each hemisphere of the cerebrum called?

A 
Frontal Lobe 
Parietal Lobe 
Occipital Lobe
Temporal Lobe
And also the insula
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13
Q

What is the White matter inside the cerebral cortex?

A

Myelinated nerve fibres

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14
Q

What are tracts?

A

Nerve fibres

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15
Q

What are the 3 types of tracts?

A
  1. Connects areas of the Cortex within same hemisphere
  2. Carries impulses between left and right hemisphere
  3. Connect the cortex to other parts of the Brian and spinal cords
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16
Q

What is the cerebrum responsible for?

A

Mental actions
Perception of senses
Voluntary muscle contractions

17
Q

What are the three types of the functional area of the cortex?

A

Sensory: interpret impulses from receptors
Motor: control muscular movements
Association: intellectual and emotional process

18
Q

What is the cerebellum?

A

Lies under the rear part of the cerebrum

2nd largest part of the brain

19
Q

What are the outer folded parts of the cerebellum made from?

A

Grey matter

20
Q

What does the cerebellum control?

A

Posture
Balance
Coordination
Voluntary muscle movement

21
Q

What is the hypothalamus responsible for?

A

Homeostasis

22
Q

The hypothalamus regulates

A 
Autonomic Nervous system
Body temp
Food and water intake
Emotional responses
Secretion of hormones
23
Q

What is the medulla oblongata

A

The continuation on the spinal cord

24
Q

What does the medulla oblongata contain?

A

Cardiac centre: regulates rate and force heartbeat
Respiratory centre: rate of breathing
Vasomotor Centre: diameter of blood vessels

25
Q

What is the Spinal cord?

A

Provides a pathway for communication between muscles glands and brain

26
Q

What is the central canal?

A

Runs though the spinal cord

27
Q

What are ascending tracts?

A

Sensory nerve fibres carry impulses towards brain

28
Q

What are descending tracts?

A

Motor never fibres carry impulses away from brain

Biology (11 decks)

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