Hae Thorax Innervation

Front 1

what are the origins for the intercostal nerves?

Back 1

t1-t11

Front 2

where do the intercostal nerves travel relative to the ribs?

Back 2

inferior to the same numbered rib

Front 3

what do the intercostal nerves provide sensory innervation to?

Back 3

the skin of the chest wall including the breast, the costal parietal pleura, the peripheral part of the diaphragmatic pleura, and proprioception from the peripheral diaphragm

Front 4

what do the intercostal nevers provide motor innervation to?

Back 4

all of the muscles of the chest wall (external, internal, innermost intercostals, and transversus thoracis)

Front 5

what are the origins of the phenic nerve?

Back 5

c3,4,5

Front 6

what does the phrenic nerve provide sensory innervation to?

Back 6

the fibrous and parietal seous pericadium, mediastinal pleura, central part of the diaphagmatic pleur, proprioception from the central part of the diaphragm

Front 7

what does the phrenic nerve provide motor innervation for?

Back 7

the diaphragm

Front 8

where does the phrenic nerve travel relative to the pericardium and lung root?

Back 8

anterior to the root of the lung on the lateral aspect of the pericardium

Front 9

where does the left vagus nerve travel relative to the aortic arch an esophagus?

Back 9

anterior to the aortic arch and anterior to the esophagus

Front 10

where does the right vagus nerve travel relative to the trachea and esophagus?

Back 10

on the lateral aspect of the trachea and posterior to the esophagus

Front 11

where do both vagus nerves travel relative to the root of the lung?

Back 11

posterior

Front 12

what effect does vagus nerve innervation have on the heart?

Back 12

parasympathetic - reduces heart rate and constricts coronary arteries

Front 13

what effect does vagus nerve innervation have on the bronchial tree?

Back 13

parasympathetic - it constricts airways

Front 14

what effect does vagus nerve innervation have on the esophagus?

Back 14

stimulates peristalsis and increases mucous secretion

Front 15

what does the left recurrent laryngeal nerve branch from?

Back 15

the left vagus nerve

Front 16

where does the left recurrent laryngeal nerve travel as it splits from the left vagus?

Back 16

posterior to the ligamentum arteriosum, inferior to the aortic arch. it then runs superiorly along the lateral aspect of the trachea to the larynx

Front 17

what does the left recurrent laryngeal nerve innervate?

Back 17

the muscles of the larynx

Front 18

what are cardiac nerves branches of?

Back 18

the sympathetic chain

Front 19

where are the preganglionic neurons of the cardiac nerves?

Back 19

t1-t4

Front 20

what effect do the cardiac nerves have on the heart?

Back 20

sympathetic - dilates coronary arteries, increases heart rate

Front 21

what effect do the cardiac nerves have on the bronchial tree?

Back 21

dilate airways

Front 22

what effect do the cardiac nerves have on the esophagus

Back 22

not known

Front 23

are the cardiac nerves pre or post ganglionic?

Back 23

postganglionic

Front 24

what do the splanchnic nerves innervate in the thorax?

Back 24

nothing

Front 25

where do the thoracic splanchnic nerves originate?

Back 25

t5-t12 chain ganglia

Front 26

are the thoracic splanchnic nerves pre or post ganglionic?

Back 26

pre

Front 27

are the thoracic splanchnic nerves sympathetic or parasympathetic

Back 27

sympathetic - they come from the sympathetic chain ganglia

Front 28

where are the visceral afferents in the thorax found?

Back 28

the visceral plexuses and nerves in the thorax

Front 29

what are the thoracic visceral afferents involved in?

Back 29

pain from the viscera, and cardiac and respiratory reflexes

Front 30

what are the three major thoracic plexuses?

Back 30

thoracic, esophageal, and pulmonary

Front 31

what types of nerves are in the thoracic plexuses?

Back 31

sympathetics (cardiac nerves), parasympathetics (from the vagus nerve) and cisceral afferents

Front 32

where is the cardiac plexus found?

Back 32

anterior to the tracheal bifurcation and between the aortic arch and pulmonary trunk

Front 33

where is the pulmonary plexus found?

Back 33

anterior and posterior to the tracheal bifurcation and main bronchi

Front 34

where is the esophageal plexus found?

Back 34

around the esophagus

Front 35

what forms the esophageal plexus?

Back 35

the left and right vagal nerves

Front 36

what does the esophageal plexus form anteriorly?

Back 36

the anterior and posterior vagal trunks

Front 37

are there sympathetics in the esophageal plexus?

Back 37

yes

Front 38

what kind of nerve is the vpr under t12?

Back 38

a subcostal nerve