basics

Question 1

what are supporting cells called?

Answer 1

neuroglia

Question 2

what is the function of neuroglia?

Answer 2

to separate and protect neurons

provide a supportive framework

Question 3

what is in the cns?

Answer 3

brain

spinal chord

Question 4

what is in the pns?

Answer 4

all neural tissue except brain and spinal chord

Question 5

what is the function of the cns?

Answer 5

responsible for integrating, processing and co-ordinating sensory data and motor commands
higher functions e.g memory, intelligence, learning

Question 6

what is the function of the pns?

Answer 6

to deliver info to cns

carries motor demands

Question 7

what is the afferent division?

Answer 7

bringing sensory information from the receptors In peripheral tissues and organs to cns

Question 8

what is the efferent division?

Answer 8

bringing motor commands from cns to muscles and glands

Question 9

the spinal chord is split into how many nervous tissues?

Answer 9

two

Question 10

what is grey matter?

Answer 10

cell bodies, dendrites and proximal part of axon neurons

Question 11

what is white matter?

Answer 11

abundance of myelinated axon tracks carrying signals from one part of cns to another

Question 12

why is there more grey matter in the lumbar region?

Answer 12

less white due to less neurons travelling to the brain

as it contains motor neurons which controls movement of limbs

Question 13

what nerves are in the pns?

Answer 13

cranial and spinal nerves

Question 14

what are the cranial nerves?

Answer 14

12 pairs of nerves from the brain stem

Question 15

what are the spinal nerves?

Answer 15

31 pairs of nerves from the spinal chord

Question 16

cranial nerve 1

Answer 16

olfactory/ smell

Question 17

cranial nerve 2

Answer 17

optic/ vision

Question 18

cranial nerve 3

Answer 18

oculomotor/ eye movement/ size of pupils and iris

Question 19

cranial nerve 4

Answer 19

trochlear/ eye movement

Question 20

cranial nerve 5

Answer 20

trigeminal/ sensory to face

Question 21

cranial nerve 6

Answer 21

abducent/ eye movement

Question 22

cranial nerve 7

Answer 22

facial/ taste/ facial expressions

Question 23

cranial nerve 8

Answer 23

vestibulocochlear/ balance/ hearing

Question 24

cranial nerve 9

Answer 24

glossopharyngeal/ taste/ blood pressure/ swallowing

Question 25

cranial nerve 10

Answer 25

vagus/taste/ movement/secretion

Question 26

cranial nerve 11

Answer 26

accessory/ neck movement

Question 27

cranial 12

Answer 27

hypoglosal/tongue movement

Question 28

what is a funiculi?

Answer 28

3 pairs of axon tracks in coloumns

Question 29

what is an ascending funiculi?

Answer 29

movement towards brain

Question 30

what is a descending funiculi?

Answer 30

movement towards target

Question 31

what is there 8 spinal nerves in the cervical region and only 7 vertebrae?

Answer 31

as the first pair of spinal nerves pass between the skull

Question 32

how many spinal nerves are in the thoraic region?

Answer 32

12

Question 33

how many spinal nerves are in the lumbar region?

Answer 33

5

Question 34

how many spinal nerves are in the sacral region?

Answer 34

5

Question 35

how many spinal nerves are in the coccygeal region?

Answer 35

1

Question 36

what type of fibres do spinal nerves contain?

Answer 36

sensory and motor fibres

Question 37

what's a dermatome?

Answer 37

a skin area supplied by sensory fibres

Question 38

what's a myotome?

Answer 38

muscles supplied by motor fibres