Nerves 1 Flashcards

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1
Q

Gyrus?

A

Ridge on the cerebral cortex of the brain

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2
Q

Sulcus?

A

Depression on the cerebral cortex of the brain

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3
Q

4 lobes of the cerebrum?

A
  • Frontal
  • Occipital
  • Temporal
  • Perietal
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4
Q

What is the diencephalon?

A

Posterior part of the forebrain

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5
Q

What two structures are found in the diencephalon?

A
  • Thalamus

- Hypothalamus

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6
Q

3 parts of the brainstem?

A
  • Midbrain
  • Pons
  • Medulla oblongata
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7
Q

Functions controlled by the brainstem?

A
  • Basic functions

- BP, RR

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8
Q

Cerebellum function?

A
  • Balance and coordination
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9
Q

How many pairs of spinal nerves are there?

A

31

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10
Q

How many cranial nerve pairs are there?

A

12

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11
Q

List the number of nerve pairs from cervical to coccygeal

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

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

A

Motor

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13
Q

Function of nerves that leave through the dorsal root?

A

Sensory

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14
Q

What is a ganglion?

A

A set of soma outside the spinal cord

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15
Q

What makes up the white matter?

A

Axons

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16
Q

What makes up the grey matter?

A

Soma

17
Q

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

A

Axon hillock

18
Q

What is the function of the axon hillock?

A

Triggers the action potential if the threshold is reached

19
Q

What happens at the presynaptic terminals?

A

Neurotransmitter is released

20
Q

What 3 types of neurones dose the somatic nervous system have

A
  • Afferent (sensory)
  • Interneurones
  • Efferent (motor)
21
Q

What are glia?

A

Support cells of the CNS

22
Q

What proportion of the CNS is glia?

A

90%

23
Q

3 types of glial cells?

A
  • Astrocytes
  • Oligodendrocytes
  • Microglia
24
Q

2 functions of astrocytes?

A
  • Maintain external environment

- Maintain blood brain barrier

25
Q

Function of oligodendrocytes?

A
  • Myelination
26
Q

2 functions of microglia?

A

Phagocytes for

  • Dead neurone
  • Infectious agents