Neuronal Transmission Flashcards

1
Q

Name and visualize the 6 different parts of the neuron

A
Dendrites
Soma
Axon
Cell membrane
Terminal endings
Myelin sheath
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2
Q

Why is white matter white and grey matter grey?

A

The neurons that have axons which are covered by myelin sheathes are white, and the opposite for grey

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3
Q

The three roles of the myelin sheath

A

protect the axon
insulator
speeds up transmission

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4
Q

What is the synaptic gap?

A

The gap that exists between the terminal ending of one neuron and the membrane receptors of the other neuron

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5
Q

Who was ramone y cajal

A

He came up with the idea that neurons have a gap between them, so they communicate with chemicals

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6
Q

senosory neurons

A

transmit impulses received by sensory receptors

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7
Q

Motor neurons

A

carry outgoing signals to the muscles from the CNS

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8
Q

Interneurons

A

Communicates with other neurons

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9
Q

What types of neurons are flexible for behaviour

A

interneurons

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10
Q

Tell me where the negative and positive charged ions are found on the resting potential

A

Negative inside, positive outside

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11
Q

What ions are negative and positive in the action potential?

A

Na is positive, Cl is negative

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12
Q

What is the resting charge of the neuron

A

-70

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13
Q

What is very important about the magnitude of the action potential?

A

It never changes. It always stays the same

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14
Q

Three effects of drugs

A

stimulate or block receptor
may attack enxymes that break down neurotransmitter
block reuptake of neurotransmitter

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15
Q

endorphins

A

neurotransmitters linked to pain control and to pleasure

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16
Q

somatic nervous system

A

the division of the peripheral nervous system that controls the body’s skeletal muscles

17
Q

what does the brain stem do

A

automatic survival functions

18
Q

what does the medulla do

A

controls heartbeat and breathing

19
Q

what does the thalamous do

A

it directs messages to sensory receiveing areas and transmitts replies to the cerebellum and medulla

20
Q

what does the cerebellum do

A

processes sensory input and coordinationg movement output and balance

21
Q

what does the amygadala do

A

linked to emotions

22
Q

what does the hypothalamus do

A

linked to emotion and reward

23
Q

what do glial cells do

A

support and protect neurons, may play role in thinking and learning

24
Q

frontal lobes do what

A

make plans and judgments

25
occipital lobes do what
receives info from visula field
26
temporal lobes do what
recieve sounds
27
motor cortex does what
controls movement that is voluntary
28
corpus collosum
carries b=messages between the two sides of the brain