Nervous System

Question 1

What is in the CNS

Answer 1

Brain

Spinal cord

Question 2

What is in the PNS

Answer 2

Cranial nerves

Spinal nerves

Question 3

What is the somative nervous system

Answer 3

Motor and sensory

Question 4

What is in the autonomic nervous system

Answer 4

sympathetic and parasympathetic

Question 5

Name the parts of the brain

Answer 5

Cerebrum 
Cerebellum 
Pons 
Medulla 
Diencephalon 
Midbrain

Question 6

What does the cerebellum do

Answer 6

Involved in maintenance of balance, posture, and muscle tone

Co-ordinates movement

Question 7

What does the brain stem do

Answer 7

Contains ascending and descending nerve fibre tracts

Question 8

What does the diencephalon do

Answer 8

Include the thalamus and hypothalamus

Question 9

What does the thalamus do

Answer 9

Important relay station for sensory information

Question 10

What does the hypothalamus do

Answer 10

Hormone secretion
Thirst centres
Thermoregulation

Question 11

What is the organisation of the cerebrum

Answer 11

Frontal lobe
Partial lobe
Occipital
Temporal

Question 12

What does the frontal lobe do

Answer 12

Motor Cortex

Intellect, planning, mood, social judgement

Question 13

What does the parietal lobe do

Answer 13

General sensation and taste

Question 14

What is the occipital lobe for

Answer 14

Visual cortex

Question 15

What is the temporal lobe for

Answer 15

Auditory cortex

Question 16

How many spinal segments are in the spine

Answer 16

31

Question 17

Name the spinal segments of the spine

Answer 17

8 cervical 
12 thoracic 
5 lumbar 
5 sacral
1 coccygeal

Question 18

Name the protective membranes that surround the brain and the spinal cord

Answer 18

Skull and mininges

Question 19

3 layers of the mininges

Answer 19

The dura
The arachnoid
Pis mater

Question 20

Can neurons reproduce once damaged

Answer 20

No

Question 21

What do neurons do

Answer 21

Carry signals from one place to another eg brain and spine

Question 22

What neurons are stimulated what do thy transmit

Answer 22

An electrical impulse

Question 23

What does the axon of the neurone do

Answer 23

Carries the electrical impulse away

Question 24

What does the myelin sheath do

Answer 24

Protect the nerve fibres and increases rate of transmission of nerve impulses

Question 25

What are the 2 systems of the nervous system

Answer 25

Central nervous system and peripheral nervous system

Question 26

Motor neurons (efferent)

Answer 26

Send info away from the central nervous system to muscle or glands

Question 27

Interneurons (afferent)

Answer 27

Send info between sensory neurons and motor neurons

Question 28

Afferent fibres carry

Answer 28

Pain and impulses from internal organs

Question 29

Efferent fibres stimulate

Answer 29

Smooth muscles
Glands
The heart

Question 30

What are nerves

Answer 30

A bundle of axons carrying info from the CNS to the rest of the body or vice versa

Question 31

How many cranial nerves are there

Answer 31

12 pairs that arise from the brain

Question 32

How many spinal nerves are there

Answer 32

31 pairs, arise from the spinal cord

Question 33

What is an action potential

Answer 33

The change in electrical potential associated with the passage of an impulse along a membrane

Question 34

What is the change in membrane potential called

Answer 34

Depolarization (causes sodium channels to open)

Question 35

How long does an action potential last for

Answer 35

A few milliseconds

Question 36

release of neurotransmitters usually follow after arrival of an

Answer 36

Action potential

Question 37

Polarisation occurs when

Answer 37

Sodium leaves the cell and potassium enters it