Autonomic Nervous System Flashcards
sympathetic
fight or flight
smooth muscles of blood vessels
parasympathetic
rest and digest
smooth muscles of organs and glands
how many sensory (afferent) neurons do both the symp and parasymp have?
only ONE
how many motor (efferent) neurons do both the symp and parasymp have?
TWO
preganglionic myelinated or non myelinated?
myelinated
post-ganglionic myelinated or non myelinated?
non-myelinated
neural crest cells
paravertebral ganglion becomes
sympathetic trunk
sympathetic trunk (chain) innervates:
pupil
heart
bronchial tree
hepatic artery
adrenal medulla
sweat glands
genitals
T1-L2
the sympathetic autonomic circuit requires __ efferent neurons
two
pre-ganglionic efferent neuron locations
cell bodies are only located at levels T1-L2
post-ganglionic efferent neuron locations
can be anywhere within the sympathetic trunk or sympathetic ganglia (not in spinal cord)
sympathetic preaortic ganglia
sympathetic splanchnic nerves
structure that connects the sympathetic trunk to the preaortic ganglia
- contain preganglionic neurons
what connects the ventral rami and sympathetic trunk?
white communicating rami (T1-L2 area)
&
grey communicating rami (every level)
what levels are both white and gray communicating rami present?
T1-L2
identify the dorsal/ventral orientation
dorsal
ventral
identify grey matter, white matter
identify the afferent (sensory ) neurons, dorsal root ganglia, efferent (motor) neuron
identify dorsal rami, ventral rami and spinal nerve trunk
identify the sympathetic: trunk, grey/white communicating rami, splanchnic nerve
identify the parasympathetic splanchnic nerve