Blood supply and venous drainage Flashcards
(126 cards)
describe how blood gets oxygenated
Deoxygenated blood goes through SVC and IVC to drain into right atrium, goes through tricuspid valve into right ventricle goes through pulmonary valve to pulmonary trunk to pulmonary arteries (R and L) to the corresponding lung to get oxygenated
describe systemic circulation of the heart
oxygenated blood coming from lungs drains into pulmonary veins to the left atrium through the bicuspid valve to the left ventricle through the aortic valve to the aorta
describe coronary circulation of the heart
Blood goes from left ventricle, through aortic valve to the aortic sinus where it flows to right and left coronary arteries to supply the heart. From RCA it wraps around back of heart for posterior descending artery (marginal artery branches off in the front)
From LCA it continues down the anterior heart for the left anterior descending artery, the left circumflex artery branches off the top
What happens to right coronary arteries and left coronary arteries when the aortic valve is open during systole
the coronary arteries are blocked!
What happens to the right and left coronary arteries in diastole when the aortic valve is closed?
coronary perfusion occurs - blood can go into the right and left coronary arteries
describe coronary veinous drainage
from the right anterior the small cardiac vein drains into coronary sinus (on posterior)
from the left anterior the great cardiac vein drains into the coronary sinus
From the posterior, the middle cardiac vein drains into the coronary sinus
what 3 arteries come off the aortic trunk?
brachiocaphalic trunk, left common corotid, left subclavian,
what does the brachiocephalic trunk divide into
right common carotid and right cubclavian
which two arteries from aortic arch/brachiocephalic trunk supply head and neck?
Right and Left common carotid
(vertebral branches from the right and left subclavian too)
what does each common carotid turn into?
each common carotid artery turns into the coronary sinus (enlargement of the artery), next it bifurcates into the external and internal carotid arteries for each side
what is the path of the internal carotid artery
passes through carotid canal and contributes to the circle of willis for brain blood flow (splits into anterior and middle cerebral ateries)
what does the external carotid artery supply generally
neck, face, scalp, skull (more superficial structures)
What are the 8 branches of the external carotid artery in order from inferior to superior
Most Inferior
Superior thyroid artery
Lingual artery
Facial artery
Occipital artery
Ascending pharyngeal artery
Maxillary artery
Posterior auricular artery
Superficial temporal artery
Most superior
- Silly Little Frogs Often Accidentally Make Poor Sounds-
what branch comes off the subclavian artery and supplies the head and neck?
R and L vertebral arteries travel through the transverse foramen of vertebrae C6-C1 and then comes out in subocipital triangle and form basilar artery for circle of willis
when does the subclavian artery become the axillary artery?
inferiro border of the first rib
when does the axillary artery become the brachial artery?
inferior border of teres major
What do radial and ulnar arteries supply?
superficial palmar arch
when does brachial artery bifurcate and what does it bifurcate into
at the cubital fossa - bifurcates into ulnar artery (proximally) and radial artery (distally)
What does the superficial palmar arch supply
digital branches
What branches off of the descending (thoracic) aorta
posterior intercostal arteries
What branches off subclavian and travels inferiorly?
internal thoracic artery
What branches off the internal thoracic artery?
anterior intercostal arteries
what do posterior intercostal veins drain into on RIGHT SIDE?
azygous vein
what do posterior intercostal veins drain into on LEFT SIDE?
Hemiazygous and accessory hemiazygoys that will then drain into azygous