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Neuroanatomy (Final) > Autonomic Nervous System > Flashcards

Autonomic Nervous System Flashcards

1
Q

The autonomic nervous system (ANS) is primarily an _____ system controlling smooth muscle, cardiac muscle and glands, and is best described as the “Visceral Motor System.”

A

EFFECTOR

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2
Q

Autonomic nervous system contains 3 division:

A
  • Sympathetic Division -Parasympathetic Division

- Enteric Division

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3
Q

Autonomic nervous system OUTPUT requires a _____ chain.

A

2 neuron

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4
Q

Preganglionic neuron are finely _____; synapses with many _____ neurons (divergence); inhibitory interneurons present in _____; cell bodies are located in _____.

A
  • Myelinated
  • postganglionic
  • ganglion
  • CNS
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5
Q

Postganglionic
neuron are _____; goes to
the _____; cell bodies are located in _____
May be excitatory or inhibitory

A
  • unmyelinated
  • effector
  • ANS ganglia
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6
Q

SYMPATHETIC DIVISION is known as the _____ OR _____ division.

A
  • “Flight or fight” division

- Thoracolumbar division

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7
Q

Preganaglionic neurons for the Sympathetic division is located where?

A

Spinal cord segments

T1 - L2/3

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8
Q

Preganaglionics of the Sympathetic division’s cell bodies are located in?

A

Nuclei in intermediate

gray (Intermediolateral cell column)

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9
Q

85% of serotonin is made in the _____ division.

A

Enteric

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10
Q

Preganglionic neurons are classified as __ -Fibers

A

B-fibers

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11
Q

The ganglia of the Postganglionic of the Sympathetic division is called?

A

Paravertebral/ prevertebral (Sympathetic chain/trunk)

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12
Q

Sympathetic division is responsible for what function in general?

A

Regulating Homeostasis

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13
Q

Postganglionic Sympathetics will extend to which two cavities?

A

Abdominal and pelvic cavities

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14
Q

_____ Sympathetics are usually named by major blood vessels.

A

Postganglionic

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15
Q

Which chain has:

  • Paired chain of ganglia
  • Extend length of spine
A

Sympathetic chain

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16
Q

What are the REGIONS of the sympathetic chain? (4)

A
  • Cervical
  • Thoracic
  • Lumbar
  • Sacral
17
Q

Sympathetic chain will terminate as _____.

A

Ganglion impar (At the very end of the cord by the cocyx, pair coming together)

18
Q 
Preganglionic neurons
enter chain and may: -Synapse \_\_\_\_\_
-\_\_\_\_\_, then synapse 
-\_\_\_\_\_, then synapse 
-Pass through chain and synapse in \_\_\_\_\_ ganglia
A
  • At that level
  • Ascend
  • Descend
  • Prevertebral ganglia
19
Q

Preganglionic Sympathetics are ONLY found in what cord segments?

A

T1-L3

20
Q

_____ neuron cell bodies are in the chain.

A

Postganglionic sympathetics

21
Q

_____ are synapsing on the sympathetic chain.

A

Preganglionics

22
Q

Preganglionic sympathetics starts in the _____ cell column. (Before this is just nerve root)

A

Anterolateral cell column

23
Q

Postganglionic sympathetic neurons will exit the chain in _____ ramus.

A

Gray

24
Q

_____ sympathetic neurons will exit the chain as specific nerve

A

Postganglionic

25
Q

Postganglionic sympathetic neurons leaves in a _____ ganglion.

A

Prevertebral

26
Q

_____ ramus cummunicans are present in all cord segment. While _____ ramus cummunicans are only present in _____.

A
  • White ramus
  • Gray ramus
  • T1-L3
27
Q

White ramus communicans creates the _____ and is for getting in the chain.

A

White ramus

28
Q

_____ ramus is created by postanglionics which goes posterior to innervate glands, and smooth muscles.

A

Gray

29
Q

Every strip of our body has _____ which is created by the gray ramus.

A

postganglionics

30
Q

Sympathetic chain sends innervation to the effectors in the _____, _____ and _____ effectors

A

Head, thoracic cavity and peripheral effectors

31
Q

Innervations to effectors in the thoracic cavity (heart) starts where? Level?

A

Intermediolateral cell column T1-T4/T5 comes out, and forms the Cardiac nerve.

32
Q

Preganglionics comes out from the _____ root to get into the spinal nerve then swing out into the _____ ramus and get into the chain

A

Ventral; white

33
Q

Innervations to effectors in the head will require preganglionics to ride up the chain. T/F?

A

True

34
Q

Damage to sympathetic chain will cause what syndrome?

A

Horner’s syndrome

35
Q

What are the 3 symptoms of Horner’s syndrome?

A
  • Miosis (Constriction of pupil)
  • Ptosis (Drooping of eyelid)
  • Anhydrosis (No sweat)

Neuroanatomy (Final) (11 decks)

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