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MTM Exam 4 > ANS > Flashcards

ANS Flashcards

1
Q

The preganglionic nerves of both the SNS & PNS release what NT on what receptor?

A

NT: ACh
Receptor: Nicotinic

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2
Q

What are the NT and receptors of post-ganglionic PNS neurons?

A

NT: ACh
Receptor: Muscarinic

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3
Q

What are the NT and receptors of post-ganglionic SNS neurons?

A

NT: NE
Receptor: alpha or beta receptors

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4
Q

When the somatic nervous system sends signals to effector organs, what NT and receptor is used?

A

NT: ACh
Receptor: N1

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5
Q

What NT and receptor goes to smooth muscles and glands of the SNS?

A

NT: NE

Receptor: α1 , α2 , β1, β2

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6
Q

What NT and receptor goes to sweat glands of the SNS?

A

NT: ACh

Receptor: M

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7
Q

What NT and receptor goes to smooth muscles and glands of the PNS?

A

NT: ACh

Receptor: M

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8
Q

What is another name for the SNS?

A

Thoracolumbar Division (T1-L3)

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9
Q

What is another name of the PNS?

A

Craniosacral Division (CN 3, 7, 9, 10 & Sacral Spinal Cord S2-S4)

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10
Q

What is CN 3?

A

Occulomotor

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11
Q

What is CN 7?

A

Facial Nerve

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12
Q

What is CN 9?

A

Glossopharyngeal

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13
Q

What is CN 10?

A

Vagus

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14
Q

What does the Myenteric (Auerbach’s) Plexus do and where is it located?

A
  • Regulates gut muscle activity
  • Between longitudinal and circular muscle layers
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15
Q

What does the Submucosal (Meissner’s) Plexus do and where is it located?

A
  • It has chemoreceptors involved with gland secretions
  • Between mucus membranes of gut (epithelium and circular muscle)
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16
Q

What effectors have ONLY SNS innervation?

A
  • Adrenal Medulla
  • Sweat Glands
  • Vascular SM
  • Pilorector Muscle of Skin
  • Liver
  • Adipose Tissue
  • Kidney
17
Q

Explain how the SNS and PNS control heart rate.

A

SNS: NE > β1 > Increased HR

PNS: ACh > M2 > Decreased HR

18
Q

When NE increases HR, what does it act upon?

A
  • Pacemaker (SA Node)
  • Cardiac Muscle (Ventricle)
  • Coronary Arteries
19
Q

What are some medications for a “Shy Bladder” or Paruresis?

A
  • Cognitive Behavior Therapy
  • Anti-Anxiety Medications
  • Anti-Depressants
  • Alpha Blockers for Relaxing IUS
20
Q

What are some medications for an overactive bladder?

A
  • Behavioral Modifications
  • Muscarinic Antagonists
21
Q

What nucleus inhibits the heart via PNS?

A

Vagal Motor Nucleus (Nucleus Ambiguous)

22
Q

What nucleus stimulates the heart via SNS?

A

Rostral Ventrolateral Medulla (RVLM)

23
Q

What part of the medulla controls the interneurons?

A

Caudal Ventrolateral Medulla (CVLM)

MTM Exam 4 (12 decks)

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