Autonomic nervous system Flashcards

1
Q

two divisions of the autonomic nervous system

A

sympathetic and parasympathetic

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2
Q

this division emerges from the thoracic and lumbar vertebral regions in the back

often referred to as the THORACOLUMBAR SYSTEM

A

sympathetic nervous system

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3
Q

this division emerges from the brain and the sacral vertebral regions

often referred to as the CRANIAL-SACRAL SYSTEM

A

parasympathetic nervous system

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4
Q

what is the sequence of efferent motor nerves that make up the chain in both the sympathetic and parasympathetic nervous system

A

preganglionic neuron > ganglion > postganglionic neuron

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5
Q

a cluster of neuronal cell bodies outside of the CNS

A

ganglion

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6
Q

neuron that has its cell body in the brain or spinal cord and extends its axon out from the CNS to a cluster of neuronal cell bodies outside of the CNS

neuron that is before the ganglion

A

preganglionic

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7
Q

neuron that carries the impulse from the ganglia to the target organ

A

postganglionic

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8
Q

the sympathetic preganglionic neuron extends out from the spinal cord and either synapses with a neuron within the ganglion chain or passes through the ganglion chain and synapses with what?

explains why sympathetic nervous system responses are usually spread throughout the body and involve several organs simultaneously

A

a neuron located beyond the sympathetic chain

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9
Q

which part of the sympathetic ganglion chain is the longest

A

postganglionic neuron

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10
Q

parasympathetic preganglionic neurons originates from what two locations

A

brain and sacral region of the spinal cord

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11
Q

this system helps the body cope with emergency situations

A

sympathetic nervous system

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12
Q

brings the body back to a resting state, facilitates all the processes that will replace body resources used up during the emergency

rest and restore system

A

parasympathetic nervous system

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13
Q

sympathetic nervous system primarily uses this neurotransmitter at the postganglionic synapse

A

norepinephrine and epinephrine

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14
Q

neurons that are released by norepinephrine

A

adrenergic neurons

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15
Q

epinephrine and norepinephrine come from where

this location acts as a cluster of adrenergic neurons

A

the medulla of the adrenal gland

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16
Q

what are the three adrenergic receptors for epinephrine or norepinephrine

A

alpha1-adrenergic receptor
beta1-adrenergic receptor
beta2-adrenergic receptor

17
Q

receptor typically found on blood vessels and cause the vasocontraction of the skin, GI tract and kidney

A

alpha1-adrenergic receptor

18
Q

stimulation of this receptor increases heart rate and force of contraction

A

beta1-adrenergic receptor

19
Q

this receptor is associated with bronchodilation

A

beta2-adrenergic receptor

20
Q

parasympathetic nervous system primarily uses this neurotransmitter at the preganglionic synapse

A

acetylcholine

21
Q

neurons released by acetylcholine

A

cholinergic neurons

22
Q

two types of acetylcholine receptors

A

nicotinic and muscarinic

23
Q

this receptor is associated with the neuromuscular junction

A

nicotinic receptors

24
Q

this receptor is found on the target organs and tissue supplied be the postganglionic neurons of the parasympathetic nervous system

A

muscarinic receptors

25
Q

parasympathetic nervous system primarily uses this neurotransmitter at the postganglionic synapse

A

acetylcholine