Thorax 5 Flashcards
what are the intercostal muscles
external
internal
innermost (transversus thoracis and subcostal)
what direction do the external intercostal muscles go
in to your pockets
what intercostal muscles have the same directional muscle fibers
internal intercostal and innermost intercostal
explain the difference between subcostal and transversus thoracis Ms
subcostal = skipping a rib/spanning over a rib
transversus thoracis = from the sternum staring out
where does the SVC receive blood from
- head
- neck
- upper limb
- thorax
where does the IVC receive blood from
- abdomen
- pelvis
- lower limb
what do the posterior intercostal veins branch off from
- azygos
- accessory hemiazygos
- hemiazygos vein
what is the intercostal nerve from
anterior ramus
branches of the intercostal nerves
Anterior ramus = intercostal nerve
- anterior cutaneous branch
- lateral cutaneous branch
Posterior Ramus
what branches off the internal thoracic artery
anterior intercostal arteries
what branches off the descending/thoracic aorta
posterior intercostal arteries
what branches off the subclavian artery
internal thoracic artery
what branches off the internal thoracic artery
- anterior intercostal arteries
- pericardiacophrenic artery
- muscilophrenic artery
- superior epigastric artery
what do the posterior intercostal branch from
descending/thoracic aorta
the aortic branches
coronary arteries
bronchial arteries
esophageal arteries
posterior intercostal arteries
phrenic arteries (sup/inf)
