Chapter 6 - CNS

Question 1

3 things the Cerebrospinal Fluid does

Answer 1

Circulates Cavities
Shock absorber
Protection, support and transport

Question 2

What is the Cerebrum

Answer 2

Biggest part of the brain

Question 3

What is the outer surface of the brain made of?

Answer 3

Grey matter = cerebral cortex

Question 4

What is below the cerebral cortex?

Answer 4

White matter

Question 5

What is inside the cerebral cortex?

Answer 5

Grey Matter - Basal Ganglia

Question 6

What are the ridges in the cerebrum known as?

Answer 6

Convolutions

Question 7

What are Sucli?

Answer 7

Shallow down folds in the cerebrum

Question 8

What is the name for deep down folds?

Answer 8

Fussures

Question 9

What almost seperate a the cerebrum into two?

Answer 9

Longitudinal Fissure

Question 10

What joins the 2 hemispheres together?

Answer 10

White matter - large bundle of transverse fibres

Question 11

3 things that protect the CNS

Answer 11

Bone
Membrane Fluid - meninges
Cerebrospinal Fluid

Question 12

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

Answer 12

Frontal Lobe 
Parietal Lobe 
Occipital Lobe
Temporal Lobe
And also the insula

Question 13

What is the White matter inside the cerebral cortex?

Answer 13

Myelinated nerve fibres

Question 14

What are tracts?

Answer 14

Nerve fibres

Question 15

What are the 3 types of tracts?

Answer 15

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

Question 16

What is the cerebrum responsible for?

Answer 16

Mental actions
Perception of senses
Voluntary muscle contractions

Question 17

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

Answer 17

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

Question 18

What is the cerebellum?

Answer 18

Lies under the rear part of the cerebrum

2nd largest part of the brain

Question 19

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

Answer 19

Grey matter

Question 20

What does the cerebellum control?

Answer 20

Posture
Balance
Coordination
Voluntary muscle movement

Question 21

What is the hypothalamus responsible for?

Answer 21

Homeostasis

Question 22

The hypothalamus regulates

Answer 22

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

Question 23

What is the medulla oblongata

Answer 23

The continuation on the spinal cord

Question 24

What does the medulla oblongata contain?

Answer 24

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

Question 25

What is the Spinal cord?

Answer 25

Provides a pathway for communication between muscles glands and brain

Question 26

What is the central canal?

Answer 26

Runs though the spinal cord

Question 27

What are ascending tracts?

Answer 27

Sensory nerve fibres carry impulses towards brain

Question 28

What are descending tracts?

Answer 28

Motor never fibres carry impulses away from brain