Nervesystemet Flashcards

1
Q

Nervecellens opbygning

A

Cellekrop
Dendritter (input)
Axon (output)
Ender: telodendroner
Kan have myelinskeder

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2
Q

Synapse

A

Når telodendronen møder et andet neuron

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3
Q

Neurotransmitter

A

Signalstof som binder sig til receptorer på modtagercellen

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4
Q

CNS

A

Hjerne
Rygmarv

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5
Q

PNS

A

Forgreninger fra hjerne og rygmarv

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6
Q

Hvad står storhjernen for?

A

Bevidsthed og beslutninger

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7
Q

Hvad står mellemhjernen for?

A

HormonreguleringerH

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8
Q

Hvad står lillehjernen for?

A

Balance og koordering

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9
Q

Hjernestammen

A

Overgang til rygmarv

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10
Q

Yderste hjernehinde

A

Dura mater (hård)

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11
Q

Midterste hjernehinde

A

Arachnoidea (spindelvæv)

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12
Q

Inderste hjernehinde

A

Pia mater (blød)

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13
Q

Rygmarvens to forskellige rødder

A

Dorsal rod - sensorisk
Ventral rod - motorisk

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14
Q

Grå substans

A

Alle synapserne

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15
Q

Hvid substans

A

Mange axoner - dækket af myelin

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16
Q

Refleksbue

A

Av på finger
Sensorisk neuron til dorsalroden
Synapser i CNS
Motorisk neuron fra ventralroden
Motorisk enhed til muskel
FJERN FINGEREN

17
Q

Sensorisk nervefibre

A

Fra overflade til CNS

18
Q

Motoriske nervefibre

A

Fra CNS til kroppen

19
Q

Autonome sensoriske

A

Fra blodkar, slimhinder osv –> CNS

20
Q

Somatiske sensoriske

A

Fra hus, muskler, sener –> CNS

21
Q

Autonome motoriske

A

CNS –> glat muskulatur, hjertemuskulatur

22
Q

Somatiske motoriske

A

CNS –> skeletmuskulatur