Thorax anatomy Flashcards
Boundaries of thoracic inlet
T1 and longus colli
first ribs
manubrium of sternum
structures passing through thoracic inlet
esophagus
trachea
external jug vv
common carotid aa
vagosympathetic trunks
recurrent laryngeal nn
roots of phrenic nn
boundaries of thoracic outlet
last vertebra
last ribs costal arch
xiphoid
diaphragm
where do the intercostal aa branch from?
aorta
where do the dorsal intercostal vv dump into?
azygous v
where do the ventral intercostal vv dump into?
internal thoracic v
which side of the rib do the intercostal van run?
caudal
where is the origin of the phrenic n?
C5,6,7
what runs through the aortic hiatus?
aorta, thoracic duct, azygous v
where is the aortic hiatus?
between R and L crua
what are the parts of the diaphragm?
muscular: sternal, costal, lumbar (L and R crua)
tendinous: central tendon
where is the esophageal hiatus and what runs through it?
in R crus, esophagus and ventral/dorsal vagal trunks
where is the caval foramen and what runs through it
R side of central tendon, caudal vena cava
cupula of diaphragm
most cranial part
What are the consequences of losing one phrenic nerve?
minimal effect
parietal pleura
2 regions
costal: lines ribs and intercostal music
diaphragmatic lines diaphragm
mediastinal pleura
lines space between 2 lungs
pleura cupulae
cup like bubbles at cranial extent of each lung that protrude short distance into neck
can be injured in penetrating wounds at base of neck
pulmonary lig
connection btwn pulmonary and mediastinal pleurae at hilus of lung
cranial mediastinum
cranial to heart
dorsal portion: esophagus, trachea, great vessels,
middle/ventral: thymus, internal thoracic aa, vv, cranial mediastinal ln
middle mediastinum
contains heart
dorsal part: esophagus, tracheal bifurcation, root of lung, tracheobronchial ln, aortic arch
middle/ventral: heart, pleura tissue
costodiaphragmatic recess
where pleura reflects from lungs to diaphragm
open space
