Lecture 3 Flashcards
CNS
in brain and spinal cord
PNS (peripheral nervous system)
outside of skull and spine, serves to bring information into CNS and signals out of CNS
PNS exist out of…
somatic nervous system (conscious) and autonomic nervous system (unconscious)
somatic nervous system exists out of…
Afferent nerves (sensory) and efferent nerves (motor)
autonomic nervous system exists out of…
both afferent and efferents nerves, and parasympathetic and sympathetic nervous system.
sympathetic nervous system
activation of body leads to increased activity of this system (fight and flight)
parasympathetic nervous system
activated when the body turns to the resting condition (rest and digest)
antagonist neurons control…
heart rate
effent pathway
two neurons and a relay station; the ganglion
preganglionic neuron (sns/psn)
acetylecholine nicotinic cholinergic receptors
preganglionic neurotransmitter of ParaNS
acetylcholine
postganglionic neurotransmitter ParaNS
acetylcholine
preganglionic neurotransmitter SNS
acetylcholine
posctganglionic neurotransmitter SNS
noradrenaline
Afferent
sensory nerves, goes to brain
