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Thorax
Anat 316
22
Anatomy
Undergraduate 3
04/19/2011

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Term
Structures passing through inlet?
Definition
esophagus
trachea
Jugular and subclavian veins
right and left vagus nerves
left and right phrenic nerves
left and right sympathetic trunks
common carotid and subclavian arteries
Term
Structures passing through the outlet of rib cage
Definition
esophagus
descending aorta
inferior vena cava
left and right vagus nerves
right and left sympathetic trunks
thoracic duct
Term
Three parts of sternum
Definition
manubrium
body
xyphoid process
Term
which ribs articulate with the body of the sternum?
Definition
ribs 2-7
Term
What is the angle called where the Manubrium joins the body?
Definition
The sternal angle (Of Louis)
Term
How many True ribs are there?
How many false?
How many floating?
Definition
7 true
5 false (ribs 11 and 12 are floating)
Term
Which ribs only articulate with their own bodies?
Definition
Ribs 1, 11 and 12
Term
fibers of external intercostals point?
Definition
down and forwards
Term
Internal intercostals fibres point?
Definition
down and posteriorly
Term
Transverse Thoracis is part of which muscle?
Definition
innermost intercostals
Term
Difference between subcostal and intercostal space?
Definition
Subcostal-area below rib 12
intercostal-located between internal and innermost layers of muscles
Term
There are ___ pairs of intercostal nerves which are in fact the _____ rami of spinal nerves
Definition
11
anterior
Term
2 sets of arteries supplying intercostal spaces
Definition
posterior and anterior intercostal arteries
Term
Where do the postrior intercostal arteries arise from?
exception?
Definition
aorta
1 & 2 arise form supreme intercostal artery
Term
Anterior intercostal arteries are branches of the _________ ________ artery which is a branch of the ________ artery
Definition
internal thoracic
subclavian
Term
The upper six ant. intercostal arteries come off the _______ ______ artery while the remaining come off the _________ artery
Definition
internal thoracic
musculophranic
Term
Intercostal veins on left side of thorax run back to empty into the ______ vein.
The left thorax drains into a series of veins called the _________ veins
Anterior intercostals drain into the _____ _______ of the internal _____ artery
Definition
azygos
hemiazygos
venae comitantes
thoracic
Term
Diapragm is innervated by left and right ______ nerves (____)
Definition
phrenic nerves
C345
Term
Diapragm has 3 origins
Lumbar is______
Costal is______
sternal is_____
Definition
two crura
lateral arcuate ligament (rib 12 and lower 6 costal cartilages)
Xyphoid process
Term
aorta pierces diapragm at level ___
Definition
T12
Term
Inferior vena cava pierces central tendon at level ____
Definition
T8
Term
Esophagus and vagus nerves pierce the central tendon at level ___
Definition
T10
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