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Anatomy Block 3 > Innervation of Thoracic and Abdominal Viscera > Flashcards

Innervation of Thoracic and Abdominal Viscera Flashcards

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1
Q

What supplies The parasympathetic input to the thoracic viscera

A

Entierly vagus preganglionics

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2
Q

What supplies the sympathetic input to the thoracic viscera

A

Postganglionic neurons in sympathetic trunk ganglia of upper 5 thoracic verterbra

superior middle and inferior cervical ganglia

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3
Q

What provides innervation to the heart

A

autonomic innervation given by cardiac plexus

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4
Q

Where are the 2 components of the cardiac plexus located

A

Superfical: under concavity of arch of aorta

Deep: located anterior to bifurcation of trachea inside fibrous pericardium

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5
Q

What branches provide Parasympathetic GVE to the cardiac plexus (pre or post)

A

Cervial cardiac from Vagus
Thoracic cardiac from Vagus
Preganglionic

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6
Q

What provides Sympathetic GVE to cardiac plexus (pre or post)

A

Sympathetic trunk ganglia T1-T5 (Thoracic cardiac branches)

Superior, Middle and inferior cervical ganglia (cervical cardiac branches)

Postganglionics

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7
Q

What provides parasympathetic sensory to the cardiac plexus

A

Inferior ganglion of vagus

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8
Q

What provides sympathetic sensory to the cardiac plexus

A

posterior root ganglia of T1-T5

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9
Q

Where do the nerves of the cardiac plexus go to reach destination

A

Follow vasculature to subsidiary plexuses and effector structures

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10
Q

What results from sypathetic stimulation of the atrial plexus?

A

Increase heart rate and strength of contraction

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11
Q

What results from parasypathetic stimulation of the Coronary plexus?

A

Constriction of coronary arteries

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12
Q

What results from parasypathetic stimulation of the atrial plexus?

A

decreased heart rate and strength of contraction

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13
Q

What results from sypathetic stimulation of the coronary plexus?

A

DIlation of coronary arteries

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14
Q

Where are the two components of the pulmonary plexus and where are they located

A

Anterior: anterior aspect of tracheal bifurcation at root of lung

Posterior: Posterior root of lung

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15
Q

Which of the components of the pulmonary plexus is ganglionated

A

Posterior

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16
Q

What does the posterior portion of the pulmonary plexus connect to

A

Anterior pulmonary plexus and cardiac plexus

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17
Q

Anterior pulmonary plexus is considered a subsidiary of what

A

The cardiac plexus

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18
Q

What provides parasympathetic innervation to the pulmonary plexus (pre or Post)

A

Cardiac plexus and thoracic branches of vagus
as it passes behind bronchi

Preganglionic

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19
Q

What provides sympathetic innervation to the pulmonary plexus (pre or Post)

A

Sympathetic trunk of T1-T6 and cardiac plexus

Postganglionic

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20
Q

What would sympathetic stimulation of the lungs cause?

A

Bronchodilation and decreased mucus secretion

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21
Q

What would parasympathetic stimulation of the lungs cause

A

Bronchoconstriction and increased mucus secretion

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22
Q

Where is the esophageal plexus located

A

inferior 2/3rds of esophagus

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23
Q

What nerves compose most of the esophageal plexus

A

Left and right vagus separate into fasicles to form most of the plexus

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24
Q

When do the vagus nerves seperate and reconjoin in the thoracic cavity

A

sperate into fascicles on lower 2/3rds of esophagus

rejoin near esophageal opening in diaphragm

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25
What is the right vagus called after passing into the abdominal cavity and why
Posterior vagal trunk | Stomach rotation causes it to lie posterior to stomach
26
What is the left vagus called after passing into the abdominal cavity and why
anterior vagal trunk | Stomach rotation causes it to lie anterior to stomach
27
What is the parasymathetic innervation to the esophageal plexus (pre or post)
Fasiculation of vagus across inferrior 2/3rds of esophagus preganglionic
28
What is the sympathetic innervation to the esophageal plexus (pre or post)
Thoracic ganglia adjacent to esophagus Postganglionic (also some contribution from cardiac plexus or branches ascending from abdominal plexuses)
29
Where is the sensory to the esophageal plexus from
Travels with vagus and sympathetic nerves
30
What is the result of sympathetic stimulation to the esophageal plexus
decreased peristalsis and secretion (indirectly via vasoconstriction
31
What is the result of parasympathetic stimulation to the esophageal plexus
increase peristalsis and secretion
32
Where is sympathetic motor to the abdominal viscera from
Thoracic Splanchnic nerves (greater, Lesser, Least) :preganglionic from T5-T12 intermediolateral cell columns Lumbar splanchnic neres: Preganglionic L1-L2
33
Where do preganglionic sympathetic innervation to abdominal viscera usually synapse
In ganglia within Viscera
34
Where do preganglionic Parasympatetic motor to the abdominal viscera usually synapse
in the ganglia in walls of viscera
35
Where does sensory to the abdominal viscera come from
Rides with sympathetic and parasympathetic components
36
What is the largest prevertebral (preaortic) plexus and where is it found
aortic plexus T12-L3 vertebral levels
37
Is the aortic plexus ganglionated or non ganglionated
ganglionated
38
How are the associated plexuses of theaortic plexus named
by anatomical association with arterial branches
39
Which is the largest named ganglia associated with aortic plexus
celiac ganglion
40
Where is the celiac ganglion located
Adjacent to celiac artery
41
What provide sympathetic innervation to the celiac ganglion (pre or post)
Greater Splanchnic nerves (T5-T9) | Preganglionic (most synapse there)
42
What happens to pregangionic sympathetics that enter the celiac gangion
Most synapse there some continue on to synapse in more lat or inferior ganglion OR in medulla of the suprarenal glands
43
What provides Parasympathetic to the Celiac ganglion
Posterior vagal trunk ANTERIOR VAGAL TRUNK BYPASSES GANGLION
44
Do fibers of the posterior vagal trunk synapse in the celiac gangion
No they pass through
45
What does the anterior vagal trunk distribute to
passees by celiac gangion to distribute directly into derivatives of foregut instead (liver stomach etc)
46
What type of fibers synapse in the celiac ganglion
only sympathetic
47
Where are the aorticorenal plexuses found
adjacent to the renal arteries
48
What provides sympathetic innervation to the aorticorenal plexus
Lesser Splanchnic nerves (T10-T11) Least splanchnic nerves (T12) Preganglionic with most synapsing there but some continuing through
49
What provides Parasympathetic innervation to the aorticorenal plexus
Continuations of the preganglionic Vagla fibers from celiac plexus (so posterior fibers)
50
What is and where is the intermesenteric plexus
Named fibers and associated ganglia of the aortic plexus between the inferior and superior mesenteric plexuses
51
What provides parasympatetics to the intermesenteric plexus (pre or post)
Vagus nerves from the aorticorenal plexus (posterior) | Prreganglionic
52
What is special about the vagal fibers to the intermesenteric and what do they innervate
It is the distal extent of vagal innervation supplies large intestine to left colic splenic flexure
53
What provides sympathetic to the intermesenteric plexus (pre or post)
Upper two lumbar splanchnic (L1-L2)
54
What is the last named subsidiary plexus of the aortic plexus
inferior mesenteric plexus
55
What supplies parasympathetic to the inferior mesenteric (pre or post)
Pelvic splanchnic nerves (S2-S4) From Hypogastric plexus and hypogastric nerves Preganglionic
56
What provides sympathetic innervation to the inferior mesenteric (pre-Post)
Upper 2 lumbar splanchinc nerves (L1-L2) from intermesenteric preganglionic
57
What provides sympathetic innervation to the supeior hypogastric plexus
Lower 2 lumbar splanchnic (L1-L2)
58
What provides parasympathetic innervation to the superior hypogastric plexus
Pelvic splanchnic nerves (S2-S4) (from hypogastricnerves)
59
What is the general trend of parasympathetic and sympathetic as far as synapsing and travel
Sym: synapse in ganglia in the plexuses the distribute via vessels Para: do not synapse in plexus but distribute along vessels to synapse on postganglionic nerve cell bodies in walls of organ
60
Where are the preganglionic portions of the sympathetic innervation to the cardiac and pulmonary plexuses
In the interomediolateral cell column of the upper 5-6 thoracic segments (GVE) Posterior root gangion of upper 5-6 thoracic segments
61
Where do the parasympathetic preganglionic fibers of the pulmonary plexus synapse
in ganglia in the smooth muscle and glands of bronchi
62
Where do the parasympathetic preganglionic fibers of the cardiac plexus synapse
in ganglia in the walls of the atria and coronary arteries
63
Where do the parasympathetic preganglionic fibers of the esophageal plexus synapse
In smooth muscle walls of the esophagus

Anatomy Block 3 (16 decks)

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