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Flashcards in Nerves 1 Deck (26):
1

Gyrus?

Ridge on the cerebral cortex of the brain

2

Sulcus?

Depression on the cerebral cortex of the brain

3

4 lobes of the cerebrum?

- Frontal
- Occipital
- Temporal
- Perietal

4

What is the diencephalon?

Posterior part of the forebrain

5

What two structures are found in the diencephalon?

- Thalamus
- Hypothalamus

6

3 parts of the brainstem?

- Midbrain
- Pons
- Medulla oblongata

7

Functions controlled by the brainstem?

- Basic functions
- BP, RR

8

Cerebellum function?

- Balance and coordination

9

How many pairs of spinal nerves are there?

31

10

How many cranial nerve pairs are there?

12

11

List the number of nerve pairs from cervical to coccygeal

C - 8
T - 12
L - 5
S - 5
C - 1

12

What is the function of nerves that leave through the ventral root?

Motor

13

Function of nerves that leave through the dorsal root?

Sensory

14

What is a ganglion?

A set of soma outside the spinal cord

15

What makes up the white matter?

Axons

16

What makes up the grey matter?

Soma

17

What is another name for the initial segment of an axon?

Axon hillock

18

What is the function of the axon hillock?

Triggers the action potential if the threshold is reached

19

What happens at the presynaptic terminals?

Neurotransmitter is released

20

What 3 types of neurones dose the somatic nervous system have

- Afferent (sensory)
- Interneurones
- Efferent (motor)

21

What are glia?

Support cells of the CNS

22

What proportion of the CNS is glia?

90%

23

3 types of glial cells?

- Astrocytes
- Oligodendrocytes
- Microglia

24

2 functions of astrocytes?

- Maintain external environment
- Maintain blood brain barrier

25

Function of oligodendrocytes?

- Myelination

26

2 functions of microglia?

Phagocytes for
- Dead neurone
- Infectious agents