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Week 1 > Autonomic Control of Body Systems > Flashcards

Autonomic Control of Body Systems Flashcards

1
Q

The autonomic system controls…

A

Involuntary visceral body functions

Ex: cardiac muscle, smooth muscle, glands

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2
Q

2 divisions of ANS

A

Sympathetic

Parasympathetic

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3
Q

Sympathetic nerves leave which region of the spine

A

Thoracolumbar
T1 to L2
Leave with the somatic nerves, but do different functions
Short preganglionic nerves

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4
Q

Parasympathetic nerves leave which region of the spinal cord

A

Craniosacral
Cranial nerves 3, 7, 9 and 10 mainly, and S2, 3, 4
Long preganglionic nerves

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5
Q

2 major control and integration centers of the ANS

A

Hypothalamus

Medulla oblongata

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6
Q

3 major components of each division of the ANS

A

Afferent
CNS
Efferent

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7
Q

Some examples of autonomic afferents

A 
Baroreceptors
Chemoreceptors
Thermoreceptors
Stretch-activated receptors
Mechanoreceptors
Pain fibers
Osmoreceptors
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8
Q

Preganglionic nerves release which NT?

A

Acetylcholine

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9
Q

Postganglionic nerves of the
1. Sympathetic
2. Parasympathetic
generally release which NT?

A
  1. NE

2. Ach

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10
Q

Collateral ganglion

A

Ganglia that are located between the sympathetic trunk and the target organ

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11
Q

How is the adrenal medulla different?

A

Preganglionic sympathetic nerve acts directly, released Ach

Adrenal cells make the epinephrine and release it into the blood

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12
Q

What postganglionic NT is released in the sweat glands and blood vessels?

A

ACh

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13
Q

Sympathetic NS

  1. Preganglionic stimulates what receptors
  2. Postganglionic stimulates what receptors
A
  1. Nicotinic

2. Alpha1, beta1 and 2 adrenergic receptors

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14
Q

Parasympathetic NS

  1. Preganglionic stimulates what receptors
  2. Postganglionic stimulates what receptors
A
  1. Nicotinic

2. Muscarinic ACh

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15
Q

Myenteric plexus

A

Controls GI tract motility

Between longitudinal and circular muscle layers

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16
Q

Submucosal plexus

A

Controls smooth muscle in the mucosa and glandular secretions
Between submucosal and muscularis mucosae

17
Q

Baroreceptors

A

Sense an increase in the stretch of our blood vessels from high BP
Located in carotid sinus (more) and aortic arch

18
Q

If stretch is sensed in the
1. Carotid sinus
2. Aortic arch
Which nerve will it go through?

A
  1. Glossopharyngeal
  2. Vagus nerve

Both then go to medulla oblongata

Week 1 (12 decks)

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