Elena N Kozlova

Question 1

när aktiveras sympatiska systemet?

Answer 1

aktiveras när vi arbetar

Question 2

Beskriv den sensoriska vägen (pathway) från beröring till att det når hjärnan

Answer 2

Beröring/stimuli
receptor
sensory nerve
central connections
ascending sensory pathway 
sensory area in the brain

Question 3

vilken sorts information överför ascending tracts?

Answer 3

ascenderande tracts är alltid sensoriska

- deliver information to the brain

Question 4

vilken sorts information överför descending tracts?

Answer 4

descending tracts are motor tracts

- deliver information to the periphery

Question 5

Vilka sensoriska neuron har vi i sensory tracts? och vad gör de olika?

Answer 5

•First-order neuron
Delivers sensations to the CNS
(The cell body is in the dorsal or cranial root
ganglion)

•Second-order neuron
A neuron with the cell body in the spinal cord or brainstem

•Third-order neuron
Transmits information from the thalamus to the cerebral cortex

Question 6

hur upptäcks ett stimuli och vad händer efter dess upptäckt?

Answer 6

to detect the stimuli from outside and inside of the body

the stimuli will be transduced into a nerve impuls. That impuls will go to the sensory cortex.

• either reflex medieted respons or
• perception respons (consoius experience) or
• an action/reaktion.

Question 7

What does a sensory stimuli activate?

Answer 7

sensory stimulus activates receptors that sit in the skin, fibers of nociceptors.