29-AutonomicNS1 Flashcards
Primary functions of autonomic nervous system
- maintain homestasis
- coordinate bodily functions necessary for survival (eg monitoring food and water, comsumption/retention of fluids, removal of waste products)
- prepare body for normal and life-threatening stress
Three cell types controlled by autonomic nervous system
- smooth muscle
- heart muscle
- glands
Somatic output from the CNS is ___, autonomic output is ___ ([monosynaptic/disynaptic])
monosynaptic, disynaptic
Final common pathway of somatic motor neuron is located in [CNS/PNS]
CNS
Final common pathway of autonomic motor neuron is located in [CNS/PNS]
PNS
true, in autonomic ganglion
Two main divisions of autonomic outflow
sympathetic and parasympathetic
[sympathetic/parasympathetic] coordinates response to stress (fight or flight)
sympathetic
[sympathetic/parasympathetic] coordinates vegetative activities (rest/digest)
parasympathetic
pre-ganglionic neuron located in [CNS/PNS]
CNS
post-ganglionic neuron located in [CNS/PNS]
PNS
true
false, instead there are continuous degradations of output from both
Basic differences in peripheral organization of sympathetic vs parasympathetic divisions (x3)
- location of preganglionic/postganglionic cell bodies
- relative lengths of pre-ganglionic and post-ganglionic axons
- neurotransmitters and receptors used at end organs
‘Thoraco-lumbar outflow’ refers to [sympathetic/parasympathetic] division
sympathetic
‘Cranial sacral outflow’ refers to [sympathetic/parasympathetic] division
parasympathetic
Sympathetic ANS:
pre-ganglionic cell bodies located in ___
interomediolateral (IML) cell collumn T1-L3
IML
interomediolateral
Sympathetic ANS:
post-ganglionic cell bodies located in ___
sympathetic ganglia
Sympathetic ANS:
Two types of sympathetic ganglia
- paravertebral ganglia (near/along vertebral column, fused into continous sympathetic chain)
- preverterbral ganglia (short distance from spinal cord, eg cervical, celiac, and mesenteric ganglia)
Sympathetic ANS:
3 possible trajectories for preganglionic axons going to ganglia
- synapse on post-ganglionic cell in paravertebral ganglion at same level
- travel up/down paravertebral ganglia before synapsing
- pass through paravertebral ganglia, synapse in prevertebral ganglia
Sympathetic ANS:
3 examples of prevertebral ganglia
- cervical
- celiac
- (superior/inferior) mesenteric
Sympathetic ANS:
Ganglionic transmission is ___
nicotonic cholinergic
Sympathetic ANS:
Pre ganglionic neurons release neurotransmitter ___
ACH
Sympathetic ANS:
Post-ganglionic neurons have ___ receptors
nicotinic
true
Sympathetic ANS:
End organ transmission (postganglionic axon to organ) is ___
catecholaminergic
Sympathetic ANS:
Most post-ganglionic axons release neurotransmitter ___
NE