29-AutonomicNS1 Flashcards Preview

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Flashcards in 29-AutonomicNS1 Deck (71)
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1

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

2

Three cell types controlled by autonomic nervous system

- smooth muscle
- heart muscle
- glands

3

Somatic output from the CNS is ___, autonomic output is ___ ([monosynaptic/disynaptic])

monosynaptic, disynaptic

4

Final common pathway of somatic motor neuron is located in [CNS/PNS]

CNS

5

Final common pathway of autonomic motor neuron is located in [CNS/PNS]

PNS

6

[True/false]: some command integration is performed peripherally in the autonomic NS

true, in autonomic ganglion

7

Two main divisions of autonomic outflow

sympathetic and parasympathetic

8

[sympathetic/parasympathetic] coordinates response to stress (fight or flight)

sympathetic

9

[sympathetic/parasympathetic] coordinates vegetative activities (rest/digest)

parasympathetic

10

pre-ganglionic neuron located in [CNS/PNS]

CNS

11

post-ganglionic neuron located in [CNS/PNS]

PNS

12

[True/false]: almost all organs are innervated by both sympathetic and parasympathetic neurons

true

13

[True/false]: sympathetic/parasympathetic activity acts like a switch from one to the other

false, instead there are continuous degradations of output from both

14

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

15

'Thoraco-lumbar outflow' refers to [sympathetic/parasympathetic] division

sympathetic

16

'Cranial sacral outflow' refers to [sympathetic/parasympathetic] division

parasympathetic

17

Sympathetic ANS:
pre-ganglionic cell bodies located in ___

interomediolateral (IML) cell collumn T1-L3

18

IML

interomediolateral

19

Sympathetic ANS:
post-ganglionic cell bodies located in ___

sympathetic ganglia

20

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)

21

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

22

Sympathetic ANS:
3 examples of prevertebral ganglia

- cervical
- celiac
- (superior/inferior) mesenteric

23

Sympathetic ANS:
Ganglionic transmission is ___

nicotonic cholinergic

24

Sympathetic ANS:
Pre ganglionic neurons release neurotransmitter ___

ACH

25

Sympathetic ANS:
Post-ganglionic neurons have ___ receptors

nicotinic

26

[True/false]: significant integration and modulation occurs in the sympathetic ganglia

true

27

Sympathetic ANS:
End organ transmission (postganglionic axon to organ) is ___

catecholaminergic

28

Sympathetic ANS:
Most post-ganglionic axons release neurotransmitter ___

NE

29

Sympathetic ANS:
Target organs contain ___ (x2) receptors

alpha and beta adrenergic

30

Sympathetic ANS:
exception to norm: some sympathetic post-ganglionic release ___, such as ___ (x2)

ACH, sweat glands, blood vessels in skeletal muscle