Nervous System

Question 1

what are the functions of the nervous system?

Answer 1

1. to recieve and analyse impulses
2. to convey them from the brain
3. to integrate them to maintain homeostasis

Question 2

how does the nervous system work?

Answer 2

sensory receptor
integration in brain and spinal chord
motor output -> effector

Question 3

what are the two systems that make the nervous system?

Answer 3

1. central nervous

2. peripheral nervous system

Question 4

what are the two parts of the central nervous system?

Answer 4

brain

spinal chord

Question 5

approximately how much oxygen does the brain need

Answer 5

20%

Question 6

what do the meninges do?

Answer 6

surround brain + spinal chord

Question 7

what are the 3 parts of the brain?

Answer 7

Cerebrum
Cerebellum
Brain stem

Question 8

what is a neurone?

Answer 8

a cell that transmits nerve impulses

Question 9

what is a nerve?

Answer 9

collection of neurones

Question 10

what do neuroglia do?

Answer 10

support+ protect neurones
replicate
don’t conduct

Question 11

what is the name of the nerve running down the leg?

Answer 11

Sciatic

Question 12

what is multiple sclerosis?

Answer 12

disease affecting the brain and spinal chord where immune system attacks the cells causing numbness, loss of muscle control, vision, balance

Question 13

what is the myelin sheathe?

Answer 13

an insulating sheathe that wraps round the axon helping to speed up the transmition of signals

Question 14

what is the white matter in the brain?

Answer 14

the connection wires

Question 15

what is the grey matter in the brain

Answer 15

the thinking part

Question 16

what is the cerebrum?

Answer 16

left and right brain

Question 17

what does the left brain do?

Answer 17

analytic thought
logic
language
science and maths

Question 18

what does the right brain do?

Answer 18

holistic thoughts
creativity
intuition
arts/ music

Question 19

whats the function of the frontal brain and where is it?

Answer 19

motor

front

Question 20

what is the periteal brain

Answer 20

sensory part

centre brain

Question 21

what is the occipital brain and where is it?

Answer 21

back of brain

controls vision

Question 22

what is the temporal brain and where is it?

Answer 22

hearing

sides

Question 23

whats the foramen magnum?

Answer 23

hole in base of skull

Question 24

wheres the Cerebellum and what does it do?

Answer 24

bottom rear brain

controls balance, muscle coordination, muscle tone and posture

Question 25

what is the mid brain and what are its functions?

Answer 25

brain stem connecting brain and spinal chord

coordinates eyes/pupils and the movement of head

Question 26

How long is the spinal chord?

Answer 26

42-45cm

Question 27

How many cranial nerves are there in total?

Answer 27

24

Question 28

How much does a typical brain weigh?

Answer 28

3lb