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All main topics / Medicine / Anatomy

Gross: Nerves of Thoracic Cavity (23 Cards)

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1
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What nerve gives somatic motor innervation to the diaphragm and from what nerves does it arise?
Phrenic n.
Ventral branches of C5, C6, and C7 spinal nerves
2
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The COST muscles and many muscles of the head arise from what?
Pharyngeal arches
3
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What modality of nerve is no longer used and what category do the muscles now fall under?
SVE is no longer used.
They fall under GSE
4
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Where are the pre-ganglionic neurons of the sympathetic nervous system located?
The T1-L5 region of the spinal cord.
5
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Where are the post-ganglionic nerve cell bodies of the sympathetic nervous system located?
Cervical, thoracic or abdominal ganglia
6
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What do the sympathetic fibers innervate?
The heart and the lungs
7
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What pre-ganglionic neurons carry parasympathetic nerves?
Cranial Nerves III, VII, IX, X.  Also sacral region of the spinal cord.
8
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What types of fibers are carried by the vagus nerve?
Sensory fibers from the pharynx, larynx, trachea, esophagus, thoracic and abdominal vescera.

Moter fibers to striated muscles of the pharynx

Visceral motor fibers to thoracic and abdominal organs
9
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Describe the course of the right recurrent laryngeal nerve
Vagus nerve-> Around right subclavian artery-> Cranially along trachea-> Larynx
10
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What causes roaring in horses?
Damage to the recurrent laryngeal nerves
11
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Describe the course of the left recurrent laryngeal nerve from the vagus nerve.
Wraps around the ligamentum arteriosum/ aortic arch->Courses cranially along trachea-> Innervates larynx
12
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At what point does the ventral vagal trunk form?
Just caudal to the heart
13
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At what point does the dorsal vagal trunk form?
Cranial to the diaphragm
14
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What do the dorsal and ventral vagal trunks innervate?
Abdominal viscera
15
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What does GVE stand for?
General Visceral Efferent
16
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What does SVE stand for?
Special Visceral Efferent
17
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What neurotransmitter is used between pre- and post-ganglionic neurons in the sympathetic and parasympathetic systems?
Acetylcholine
18
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What neurotransmitter is used between the post-ganglionic neuron and the target organ in the parasympathetic system?
Acetylcholine
19
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What is the neurotransmitter between the post-ganglionic neuron and the target organ in the sympathetic system?
Norepinephrine
20
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What are the types of nerve fibers found in a spinal nerve?
Somatic motor
Somatic sensory
Visceral motor
Visceral sensory
21
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What does the phrenic nerve innervate?
The diaphragm
22
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What modality of nerves is only present in cranial nerves?
Special nerves
23
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What are the three functions of the visceral motor system?
Maintain homeostasis
Respond to stress
Control involuntary action
Flashcard set info:
Author: toncrayb
Main topic: Medicine
Topic: Anatomy
Published: 14.11.2009
Tags: Oregon, nerves, thorax
 
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