Central Nervous System

Question 1

3 layers of the meniges

Answer 1

1. dura matar
2. arachnoid
3. pia matar

Question 2

functions of the CNS

Answer 2

1. gathers information using senses
2. interpret and resond to stimuli
3. processes information

Question 3

cerebrospinal fluid function

Answer 3

1. cushions the brain and spinal cord form shock and keeps nervous tissue moist

Question 4

the cerebrum has to hemispheres split by the ?

And what is its function?

Answer 4

corpus collosum

It allows for communication between the 2 hemispheres

Question 5

what to structures increase surface area in the cerebrum

Answer 5

sulci and the gyri

Question 6

what are the 4 lobes that the cerebrum is separated into

Answer 6

1. frontal ( motor area: voluntary movements e.g speech)
2. parietal ( interpreting sensations)
3. occipital ( sight)
4. temporal ( hearing , tasting and smelling )

Question 7

the cerebellum is split by the ?

Answer 7

vermis

Question 8

what structure increases the surface area of the cerebellum

Answer 8

folia

Question 9

function of the cerebrum

Answer 9

voluntary actions: receives and interprets all sensations ( sight ,hearing ,smell,taste and touch)

Question 10

function of the cerebellum

Answer 10

co - ordination of voluntary movements ( walking ,running and maintaining muscle tone )

Question 11

function of medulla oblongata

Answer 11

involuntary actions: breathing ,dilation and constriction of blood vessels,swallowing

Question 12

function of the hypothalamus

Answer 12

controls body temperature,blood pressure ,sleep,appetite, thirst and emotions

Question 13

what are functions of afferent and efferent nerves

Answer 13

Afferent nerves take signals from a receptor towards the CNS,and efferent nerves bring signals from the CNS towards and effector e.g muscle

Question 14

what are the main functions of the spinal cord

Answer 14

1. works with the medulla oblongata to control reflex actions
2. impulses are sent toward and away from the brain via the cord.

Question 15

ataxia

Answer 15

damage of the cerebellum causing lack of muscle co-ordination