Arterial supply of trunk Flashcards
aorta
carries oxygenated blood around the body.
It arises from the heart gives major branches to the head and neck and upper limbs before passing inferiorly along the posterior body wall just in front and slightly to the left the thoracic and lumbar vertebral bodies to supply the body wall and organs.
what does the aorta consist of
ascending aorta, aortic arch, descending thoracic aorta, and abdominal aorta.
where does the descending aorta piece the diaphragm
vertebral level T12 to become the abdominal aorta.
where does the abdominal aorta branch into
the common iliac arteries
what do the common iliac arteries branch into
internal and external iliac arteries.
vertebral level of beginning and end of aortic arch
begins and ends at the level of the second rib
Bifurcation of the abdominal aorta into common iliac arteries
L4 to L5 level
Bifurcation of the common iliac arteries into external and internal iliac arteries
S1-3 level
what are the main branches of the aorta
Branches of the ascending aorta
Branches of the aortic arch
Branches of the ascending aorta:
These are: the left and right coronary arteries (dealt with earlier).
Branches of the aortic arch:
These are: the brachiocephalic trunk (BT), left common carotid artery (LCC) and left subclavian artery (LSA).
What are the two branches given off by the brachiocephalic trunk?
right carotid artery (which sends blood to your brain) and your right subclavian artery (which sends blood to your right arm)
Main branches of the descending thoracic aorta:
posterior intercostal arteries (lying between the ribs posteriorly)
oesophageal arteries (supplying the oesophagus)
bronchial arteries (supplying the tissue of the lungs with oxygenated blood)
mediastinal branches (supplying other mediastinal structures)
Each intercostal space (space between the ribs) is supplied in the form of
a neurovascular bundle of structures running in each space.
These neurovascular structures running in each intercostal space are the:
intercostal vein
intercostal artery
intercostal nerve
list intercostal vein
intercostal artery
intercostal nerve from superior to inferior
intercostal vein
intercostal artery
intercostal nerve
where do the vessels of the intercostal space arise from
arise from, or drain into, larger vessels that run vertically along the anterior and posterior chest wall (e.g., aorta, internal thoracic vessels, superior vena cava).
where do the vessels of the intercostal space arise from
arise from, or drain into, larger vessels that run vertically along the anterior and posterior chest wall (e.g., aorta, internal thoracic vessels, superior vena cava).
Arteries arise from the abdominal aorta in order to supply
diaphragm, adrenals, kidneys, gonads, and the gut tube
Common iliac arteries
arise at vertebral level L4 and lie in iliac fossae. They are the terminal branches of the abdominal aorta.
External iliac arteries
arise from the common iliac arteries at vertebral level L5 and become the femoral
Internal iliac arteries
arise from the common iliac arteries at vertebral level L5 and supply pelvic viscera.
Main branches of the abdominal aorta:
Common iliac arteries
External iliac arteries
Internal iliac arteries
where do the internal thoracic arteries arise from
subclavian arteries and lie anteriorly and parasternally, accompanied by the internal thoracic veins.
what do internal thoracic (internal mammary) arteries give off
anterior intercostal arteries to the intercostal spaces.
Within each intercostal space, each anterior intercostal artery anastomoses with its corresponding posterior intercostal artery which is given off by the _________.
descending aorta
Within each intercostal space, each anterior intercostal artery anastomoses with its corresponding posterior intercostal artery which is given off by the _________.
descending aorta
Branches from the internal thoracic arteries also supply
the breast, fibrous pericardium, parietal pleura and the diaphragm.
