CNS intro

Question 1

CNS consists of

Answer 1

Brain

Spinal cord

Question 2

spinal cord protected by

Answer 2

vertebral column

Question 3

brain protected by (4)

Answer 3

cranium
cranial meninges
cerebro-spinal fluid (CSF)
blood-brain barrier

Question 4

three layers of connective tissue that cover the brain and spinal cord

Answer 4

meninges

Question 5

3 layers of meninges

Answer 5

Dura mater - tough outer
arachnoid mater - stringy, elastic
pia mater - delicate

Question 6

clear liquid that protects the brain & spinal cord from trauma and chemical injuries

Answer 6

cerebro-spinal fluid

Question 7

CSF made from

Answer 7

filtered blood, water, Ions and glucose

Question 8

4 functions CSF

Answer 8

supports/protects brain/spinal cord
maintains uniform pressure around brain
keeps moist
circulates nutrients/waste

Question 9

the blood brain barrier protects the brain from

Answer 9

toxins, harmful substances and bacteria that enter the bloodstream by maintaining the tightness of capillaries and the junctions between cells

Question 10

the BBB is maintained by

Answer 10

astrocytes

Question 11

can lipid soluble substances cross the BBB - alcohol,anaesthaetics

Answer 11

yes easily

Question 12

can glucose cross the BBB

Answer 12

yes by active transport

Question 13

can gasses cross the BBB

Answer 13

yes diffuse easily

Question 14

can ions cross the BBB

Answer 14

yes diffuse slowly across

Question 15

can proteins pass the BBB

Answer 15

no

Question 16

rhyme to remember 12 cranial nervea

Answer 16

OOO to touch and feel virgin girls vaginas and hymen

Question 17

cranial nerve 1

Answer 17

olfactory nerve - sense of smell

Question 18

cranial nerve 2

Answer 18

optic nerve - vision

Question 19

cranial nerve 3

Answer 19

oculomotor - eye movements, eyelid opening, proprioception, pupil size

Question 20

cranial nerve 4

Answer 20

trochlear - eye movements, proprioception

Question 21

cranial nerve 5

Answer 21

trigeminal - facial sensations, chewing

Question 22

cranial nerve 6

Answer 22

abducens - eye movements and focussing

Question 23

cranial nerve 7

Answer 23

facial - taste, facial expressions

Question 24

cranial nerve 8

Answer 24

vestibulocochlear/auditory - hearing/balance

Question 25

cranial nerve 9

Answer 25

glossopharyngeal - taste, swallowing

Question 26

cranial nerve 10

Answer 26

Vagus - swallowing, taste, monitoring BP, CO2, O2,

Question 27

cranial nerve 11

Answer 27

accessory/spinal - neck & shoulder muscles

Question 28

cranial nerve 12

Answer 28

hypoglossal - tongue movement, speech