nerve pathways Flashcards
name the 4 special sensations
hearing
vision
taste
smell
name the 4 general sensations
pain
touch
temperature
proprioception
what is the role of the sympathetic system
puts body on alert
what is the origin of the sympathetic system
T1-L2
describe the lengths of neurones in sympathetic system
short preganglionic
long post ganglionic
name the ganglion receptor in sympathetic system
Ach on nicotinic receptor
name the terminal end receptor in sympathetic system
NA (noradrenaline) on adrenoreceptors
what is the role of the parasympathetic system
relax and reduce body activities
what are the origins of the parasympathetic system
cranial nerves III, VII,IX and X
S2-S4
describe the lengths of neurones in parasympathetic system
long preganglionic neurone
short postganglionic neurone
name the ganglion receptor in parasympathetic system
Ach on nicotinic receptor
name the terminal end receptor in parasympathetic system
Ach on muscarnic receptors
what does a mechanoreceptor detect
touch, vibration and proprioception
what does a thermoreceptor detect
temperature change
describe the nerve endings on a thermoreceptor
free nerve endings
what does a nociceptor detect
pain
the thalamus has what role when connecting the CNS and PNS
screens out irrelevant information
name the 2 sensory pathways
lateral spinothalmic tract
dorsal column tract
what sensation is controlled by lateral spinothalmic tract
pain, temp or coarse touch
name the location at which the first and second order neurones in the lateral spinothalmic tract synapse
dorsal horn
where does the second order neurone desuccate in the lateral spinothalmic tract
spinal level
what sensation is controlled by dorsal column tract
touch, vibration, pressure, proprioception
name the location at which the first and second order neurones in the dorsal column tract synapse
medulla
where does the second order neurone desuccate in the dorsal column tract
medulla
