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77 Cards in this Set
- Front
- Back
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Pulmonary circulation: puropse |
to transport to the alveoli so that blood can exchange CO2 for O2 at the capillary level |
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pulmonary circulation: composition |
ivc and svc, main pa, lt and rt pa, pulmonary surrounding the alveoli |
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pc controlled by |
autonomic nervous system |
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disorder that can affect the pc |
hypoxia pH |
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systemic arterial circulation: purpose |
supply oxygenated blood to the rest of body's tissues, depending on the changing needs of the body at that location and moment of time |
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sac: composition |
ARTERIES, aorta and its braches |
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arterioles |
WHERE THE FLOW OF BLOOD IS CONTROLLED. THEY HAVE THE MOST RESISTANCE |
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purpose of arterioles |
1. regulate mean blood pressure 2. control blood flow into organs |
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composition of arterioles |
metarterioles and cappillaries |
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sac controlled by |
neverous system- cardiovascular center: neurons in the medulla oblongata, 3 centers
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what are the 3 centers of the cardiovascular center |
cardio accelerator center cardio inhibitor center vasomotor center
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what does the cardio accelerator center do |
neurons accelerate heart rate and stroke volume via SYMPATHETIC stimulation
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what node stimulates the cardio accelerator and for what reason |
SA NODE BP low |
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2nd cardiovascular center |
cardio inhibitor center |
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what does the cardio inhibitor center do |
neurons decrease heart rate and stroke volume via PARASYMPATHETIC impulses |
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3rd cardiovvascular center |
vasomotor center |
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what does the vasomotor center do |
neurons control blood vessel diameter via the smpathetic neverous system, the arteriols |
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baroreceptors do what |
pressure sensitive sensory neurons, control BP |
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where are baroreceptors located |
carotid sinuses, aortic arch, RA, IVC,SVC |
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chemoreceptors do what |
sense and monitor the pH, O2 levels, CO2 levels and speed up the heart |
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chemoreceptors located |
carotid sinuses and arotic arch |
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hormones that increase BP |
epinephrine and norepinephrine secreted by the medulla increase BP
renin secreted by kidney |
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systemic venous circulation: purpose |
to return blood from the rest of the body to the RT heart and lungs
TO ACT AS A STORAGE LOCATION FOR BLOOD UNTIL NEEDED |
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systemic venous circulation:controls |
1. sympathetic nervous system 2. arterial tone |
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coronary circulation of the heart: purpose |
to provide a constant supply of O2 rich blood to the myocardium under varying conditions or demands. |
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when do coronary arteries fill |
during ventricular diastole, while aortic valve is closed |
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dominance of RCA and LMCA |
depending which one gives rise to the POSTERIOR DESCENDING BRANCH.
85% RCA 15% LMCA |
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what are the 2 main arteries |
RIGHT MAIN LEFT MAIN |
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where does the LMCA come off of |
aorta at the level of the sinus of valsalva laterally positioned located at LCC |
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LMCA bifurcates into |
Left Anterior Descending LAD
Circumflex LCx |
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RCA comes off where |
aorta at the level of sinus of valsalva located anterior surface of the heart (closer to RT Vent.) positioned RCC |
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what are the 3 main coronary arteries |
LAD LCx RCA |
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where does LAD go |
travels down towards anterior aspect of the heart |
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what does the LAD fed |
ASS anterior walls septal walls apical walls |
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name important branch of LAD |
perforators |
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what do the perforators supply BLOOD to |
INTRAVENTRICULAR SEPTUM |
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perforators give rise to |
Diagonal branches
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what else might the LAD supply blood to |
a portion of RV apex moderator band SA node 50% of time |
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what does the Circumflex supply blood to |
Lateral and Posterior walls LP |
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Circumflex gives rise to |
Obtuse Marginal Branches |
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2 chamber Inferior wall fed by |
RCA |
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2 chamber apex and anterior walls fed by |
LAD |
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3 chamber posterior wall fed by |
Circumflex |
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3 chamber anterior septal wall fed by |
LAD |
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4 chamber inferoseptal wall fed by |
RCA |
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4 apex fed by |
LAD |
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4 chamber anterio lateral wall fed by |
Circumflex |
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RCA mainly supplies the |
RV |
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RCA branches in |
POSTERIOR DESCENDING ARTERY 85% ACUTE MARGINAL BRANCHES |
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RCA also feeds |
SA NODE, AV NODE, RA, parts of IVS, LV, |
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POSTERIOR DESCENDING artery bifurcates |
perpendicular branches posterior septal perforators |
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septal pperforators feed |
posterior 1/3 of rt and lt ventricular septal walls and have several branches that come off RCA and/or Coronary Sinus |
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ACUTE MARGINAL BRANCHES SUPPLY |
ANTERIOR PORTIONS OF RVC |
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coronary veins: purpose |
to drain hearts muscle of blood back into RA |
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3 major coronary veins |
coronary sinus anterior right ventricular veins thesbian vein |
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coronary sinus location |
posterior part of the Coronary Sulcus or AV Groove |
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branches of the coronary sinus |
Great Middle Small Cardiac veins Anterior Intraventricular vein Posterior Veins of LV LA Oblique vein |
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Great drains blood from |
Posterior LV branches, Marginal branches |
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middle drains blood |
Posterior IV vein, posterior IVS |
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small cardiac veins drain |
ra/rv branches |
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anterior intraventricular vein drains |
ivs anteriorly, RV free wall |
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coronary sinus drains |
mainly drains LV of blood into the Infero-posterior aspect of the RA. |
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what is the coronary sinus guarded by |
thesbian valve |
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anterior right ventricular veins aka anterior cardiac veins
location |
originated in and drains the anterior RV free wall |
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where does the anterior rt ventricular vein drain |
RA |
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Thebesian vein |
TINY VENOUS OUTLETS
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where does Thebesian vein drain |
drains the myocardium directly into the RA and ventricle |
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what are the cardiac veins |
small middle great |
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where do the cardiac veins dump into |
coronary sinus |
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where is the small cardiac vein |
back of heart, back of RA and RV |
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what does the small cardiac drain |
RA, RV into coronary sinus |
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where is middle cardiac vein located |
back of heart from apex |
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what does midddle cardiac drain |
tributaries from both Ventricles into coronary sinus |
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great cardiac vein location |
apex of the front of heart |
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great cardiac drains |
tributaries from LA and both Ventricles into coronary sinus |
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coronary sinus location |
posterior part of coronary sulcus |
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coronary sinus drains |
CARDIAC VEINS INTO RA |
