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Anatomy > Anatomy Review Slides Lec. 21 > Flashcards

Anatomy Review Slides Lec. 21 Flashcards

1
Q

Fxn of the Vagus Nerve parallel to the Esophagus?

A

Innervate the Esophagus

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2
Q

ANS background

A
  • 2 Divisions
  • Entirely MOTOR
  • DUAL innervation for Most structures
    (Sympathetic and Parasympathetic)
  • 2 Neuron pathways
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3
Q

Characteristic of the 1st Thoracic ganglia

A

Usually Fused w/ INF Cervical Ganglia

Known as Stellate

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4
Q

The LEFT Vagus Nerve becomes what?

A

The ANTERIOR Vagal Trunk

“LA”

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5
Q

Actions of the Parasympathetic nerves

A
  • Secretion of digestive fluids

- Peristaltic contractions

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6
Q

Lesser Splanchnic Nerve

  • Originates?
  • Synapses?
A
  1. T10 - T11

2. Synapses of the MESENTERIC ganglion

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7
Q

LEFT Recurrent Laryngeal Nerve

A
  • From Left Vagus

- Hooks around the AORTIC ARCH

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8
Q

Thoracic Symp Chain

A
  • Cervical Ganglia

- Lies Against Neck of RIBS and Costo-vertebral Jxns

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9
Q

Vagus Nerve Background

A
  • CN X

- Major Parasympathetic supply to the ABDOMINAL viscera

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10
Q

2 Divisions of the ANS

A

Sympathetic
- T1 - L2

Parasympathetic
- C3, 7, 9, 10 & S2-S4

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11
Q

Actions of Sympathetic Nerves

A
  • Inhibit digestive secretions
  • Inhibits peristalsis
  • Closes Involuntary sphincters
  • Constricts blood flow to GUT
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12
Q

Greater Splanchnic Nerve

  • Originates?
  • Synapses?
A
  1. T5 - T9

2. Synapses on the CELIAC ganglion

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13
Q

POST-Ganglionic Neurons

A
  • Originate from the GANGLION
  • NEVER Myelinated
  • Utilizes Norepinephrine
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14
Q

How many Cervical ganglia are there?

A

3 Total

  1. Superior
  2. Middle
  3. Inferior
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15
Q

Sympathetic Nerves

A
  • Synapses with LARGE ganglia located in dorsal walls of COELOM
  • Involved in responses regulated to
    1. Anger
    2. Fear
    3. Anxiety
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16
Q

The Splanchnic Nerves

A

3 Total

  1. Greater
  2. Lesser
  3. Least
17
Q

The RIGHT Vagus Nerve becomes what?

A

The POSTERIOR Vagal Trunk

“PR”

18
Q

Parasympathetic Nerves

A
  • Synapse on small Ganglion cell in WALL of target Organs

- Primarily responsible for Maintaining and Coordinating GUT Fxn

19
Q

Least Splanchnic Nerve

  • Originates?
  • Synapses?
A
  1. T12

2. Synapses in in the AORTICORENAL ganglion

20
Q

What do PRE-GANGLIONIC Neurons utilize?

A

ACh

21
Q

PRE-Ganglionic Neurons

A
  • Originate WITHIN Spinal Cord
  • Always MYELINATED
  • Synapses with the Post-gang neuron
  • Utilizes ACh
22
Q

RIGHT Recurrent Laryngeal Nerve

A
  • From the RIGHT Vagus Nerve
  • Hooks around the SUBCLAVIAN Artery
  • Arises in the NECK
23
Q

How many thoracic ganglia pairs are there?

A

12

24
Q

What do POST-GANGLIONIC Neurons utilize?

A

Norepinephrine

Anatomy (16 decks)

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