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38 Cards in this Set

  • Front
  • Back
what are the origins for the intercostal nerves?
t1-t11
where do the intercostal nerves travel relative to the ribs?
inferior to the same numbered rib
what do the intercostal nerves provide sensory innervation to?
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
what do the intercostal nevers provide motor innervation to?
all of the muscles of the chest wall (external, internal, innermost intercostals, and transversus thoracis)
what are the origins of the phenic nerve?
c3,4,5
what does the phrenic nerve provide sensory innervation to?
the fibrous and parietal seous pericadium, mediastinal pleura, central part of the diaphagmatic pleur, proprioception from the central part of the diaphragm
what does the phrenic nerve provide motor innervation for?
the diaphragm
where does the phrenic nerve travel relative to the pericardium and lung root?
anterior to the root of the lung on the lateral aspect of the pericardium
where does the left vagus nerve travel relative to the aortic arch an esophagus?
anterior to the aortic arch and anterior to the esophagus
where does the right vagus nerve travel relative to the trachea and esophagus?
on the lateral aspect of the trachea and posterior to the esophagus
where do both vagus nerves travel relative to the root of the lung?
posterior
what effect does vagus nerve innervation have on the heart?
parasympathetic - reduces heart rate and constricts coronary arteries
what effect does vagus nerve innervation have on the bronchial tree?
parasympathetic - it constricts airways
what effect does vagus nerve innervation have on the esophagus?
stimulates peristalsis and increases mucous secretion
what does the left recurrent laryngeal nerve branch from?
the left vagus nerve
where does the left recurrent laryngeal nerve travel as it splits from the left vagus?
posterior to the ligamentum arteriosum, inferior to the aortic arch. it then runs superiorly along the lateral aspect of the trachea to the larynx
what does the left recurrent laryngeal nerve innervate?
the muscles of the larynx
what are cardiac nerves branches of?
the sympathetic chain
where are the preganglionic neurons of the cardiac nerves?
t1-t4
what effect do the cardiac nerves have on the heart?
sympathetic - dilates coronary arteries, increases heart rate
what effect do the cardiac nerves have on the bronchial tree?
dilate airways
what effect do the cardiac nerves have on the esophagus
not known
are the cardiac nerves pre or post ganglionic?
postganglionic
what do the splanchnic nerves innervate in the thorax?
nothing
where do the thoracic splanchnic nerves originate?
t5-t12 chain ganglia
are the thoracic splanchnic nerves pre or post ganglionic?
pre
are the thoracic splanchnic nerves sympathetic or parasympathetic
sympathetic - they come from the sympathetic chain ganglia
where are the visceral afferents in the thorax found?
the visceral plexuses and nerves in the thorax
what are the thoracic visceral afferents involved in?
pain from the viscera, and cardiac and respiratory reflexes
what are the three major thoracic plexuses?
thoracic, esophageal, and pulmonary
what types of nerves are in the thoracic plexuses?
sympathetics (cardiac nerves), parasympathetics (from the vagus nerve) and cisceral afferents
where is the cardiac plexus found?
anterior to the tracheal bifurcation and between the aortic arch and pulmonary trunk
where is the pulmonary plexus found?
anterior and posterior to the tracheal bifurcation and main bronchi
where is the esophageal plexus found?
around the esophagus
what forms the esophageal plexus?
the left and right vagal nerves
what does the esophageal plexus form anteriorly?
the anterior and posterior vagal trunks
are there sympathetics in the esophageal plexus?
yes
what kind of nerve is the vpr under t12?
a subcostal nerve