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Body Logistics > DONE Neurones > Flashcards

DONE Neurones Flashcards

1
Q

What is the other name for a cell body?

A

Perikaryon

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2
Q

Do dendrites conduct towards/away cell body?

A 
Dendrites = towards
Axon = Away
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3
Q

What produces myelin in the CNS?

A

Oligodendrocyte

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4
Q

What produces myelin in the PNS?

A

Schwann cell

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5
Q

Motor neurone

A

CNS to periphery

Signals to receptors

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6
Q

Sensory neurone

A

Periphery to CNS

Environmental signals to integrative centre

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7
Q

Integrative neurone

A

CNS

Collates all info.

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8
Q

Anaxonic neurone

A

Retina

No axon, only dendrites

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9
Q

Multipolar nerves

A

1 axon, many dendrites
Most common
CNS

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10
Q

Astrocyte

A

CNS support cell

Perineural feet with gap junctions = support endothelial cells

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11
Q

Microglial cells

A

Large cells, elongated nucleus
CNS
Resident macrophage

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12
Q

Ependymal cell

A

Line spinal canal + ventricles of brain
Look like columnar epithelial cells
Have cilia + microvilli
Secrete cerebrospinal fluid (CSF)

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13
Q

Multiple sclerosis

A 
Autoimmune degradation of myelin
Symptoms: (due to loss of conduction velocity)
Vision issues (Diplopia)
Slurred speech (dysarthria)
Numbness + tingling (paraesthesia)
Mobility issues (muscle spasms)
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14
Q

Grey matter

A

Nerve cell bodies (perikaryon)
Dendrites
Axon terminals
Unmyelinated axons

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15
Q

Location of grey matter

A

Peripheral in brain = nuclei
Central in spinal cord = butterfly-shaped
Have ventral + dorsal horns

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16
Q

White matter

A

Myelinated material

17
Q

Location of white matter

A

Central in brain

Peripheral in spinal cord

18
Q

What is the CNS made up of?

A

Brain + spinal cord

19
Q

What is the PNS made up of?

A

Somatic + autonomic

20
Q

What is the somatic system?

A

Voluntary, conscious control

21
Q

What is the autonomic system made of?

A

Sympathetic system = fight or flight
Parasympathetic = rest + digest
Enteric = gut wall

22
Q

Define ganglia

A

Accumulation of neuron cell bodies outside the CNS (i.e. in PNS)

23
Q

How many neurones in autonomic nervous system between CNS + target organ?

A

2 neurones = preganglionic in CNS and postganglionic in autonomic ganglion

24
Q

Sympathetic 2 neurones

A

Myelinated shorter preganglionic

Unmyelinated Longer postganglionic

25
Q

Parasympathetic 2 neurones

A

Long myelinated preganglionic

Shorter unmyelinated postganglionic

26
Q

Unipolar nerves

A

Single process

Sensory (skin)

27
Q

Bipolar nerves

A

1 axon, 1 dendrite

Sensory (olfactory = smell, Retina)

Body Logistics (14 decks)

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