sensory, Autonomic + Motor Flashcards
what is CNS shielded by?
blood-brain barrier
what are the divisions of PNS?
– somatic motor system
– autonomic nervous system (ANS)
– Enteric nervous system
what is nociception?
sensing, processing and responding to pain
what is the spinothalamic tract considered?
second-order neuron
what is the thalamocortical projection considered?
third order neuron
what is decussation?
when sensory nerves cross from one side of the body to the other side
what does the thalamus do?
sensory filtering and act as a sensory relay station
what is the ‘cocktail party effect’?
*filters irrelevant info
*able to respond to certain cues
*rapid desensitization to irrelevant interruptions
what may help schizophrenics when shown deficits in sensory gating?
nicotine
which structure in the thalamus is responsible for sensory gating
pulvinar nucleus
what does the adaptation of the sensory effect typically produce?
inverse effect
what is olfaction?
the sense of smell
what is corticospinal tract
the major neuronal pathway providing voluntary motor function
what is the ‘final common pathway’
The basic circuitry for generating movement is in the spinal cord
what is the cerebellum?
motor co-ordinator
what is dysdiadochokinesia?
the inability to perform rapid alternating muscle movements
what does the autonomic nervous system do?
Maintains the internal environment of the body. also a major drug target
which part of the spinal coloumn is involved in sympathetic system?
T1 to L2
which part of the spinal column is involved in the parasympathetic system?
from cranial to sacral segments
what can the sympathetic system be described as?
Fight or flight
what can the parasympathetic system be described as?
rest and digest
where does the voluntary movement arise?
in the cortex
