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38 Cards in this Set
- Front
- Back
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Where is the heart located?
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In the middle mediastinum
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What is the pulmonary circuit?
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The R side of the circulatory system recieves deoxygenated blood and pumps it to the lungs
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What is the systemic circuit?
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The L side of the circulatory system recieves oxygenated blood and pumps it through the body
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RIght Atrium-
What kind of blood does it recieve? From where? |
Deoxygenated from the systemic circuit.
Superior/Inferior vena cava and coronary sinus |
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Right atrium-
Composition? |
1/2 smooth walled, 1/2 pectinate muscles, separated by crista terminalis ridge
*right auricle projects externally |
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What/Where is the fossa ovalis?
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In the right atrium, marks the spot wher ethe foramen ovale hole was in the fetal heart
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What/Where is the Sinoatrial Node?
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In the right atrium- sends electrical impulses to the AV node
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What/Where is the atrioventicular node?
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In the right atrium- recieves impulse from the SA node and transitmits them to the ventricles via the Bundle of His
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What separates blood flow from the right atrium to the right ventricle?
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The tricuspid valve
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Left atrium-
What kind of blood does it recieve? From where? |
Recieves oxygen rich blood from the lungs via the pulmonary veins
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Left atrium-
Composition? |
The Left auricle is lined with pectinate muscles, but the rest is smooth-walled
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What separates the left atrium from the left ventricle?
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The Mitral (bicuspid)valve
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What does the right ventricle do?
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Takes blood fromt he R atrium and pumps it into the pulmonary circuit via the pulmonary trunk (an artery)
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What regulates blood flow from the right ventricle to the pulmonary trunk?
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The pulmonary semilunar valve.
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Right ventricle-
Composition? |
Walls have ridges called trabeculae carnae.
cone-shaped paillary muscles |
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What are chordae tendinae?
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In the R and L ventricles, these bands project from the papillary muscles to the tricuspid and bicuspid valves, respectively
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What is the moderator band?
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In the R ventricle, prvents the over dialation of ventricle
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What does the Left ventricle do?
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Takes blood fromt he L atrium and pumps it into systemic circulation via the AORTA
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What regulates blood flow fromt he L ventricle into the aorta?
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The aortic semilunar valve
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Where is the cardiac skeleton and what does it do?
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Supports the 4 valves, prevents impulses from passing from atria to ventricles
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What arteries come from the ascending aorta?
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The Right and Left coronary arteries
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What arteries come from the Left Coronary artery?
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The anterior interventricular and Circumflex arteries
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What arteries come from the right coronary artery?
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The right marginal and posterior interventricular arteries.
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Whwere does gas (O2) exchange take place?
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Between the alveoli of the lung and the pulmonary capillaries
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What is the ligamentum arteriosum?
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A remnant of the fetal ductus arteriosus. Connects the aortic arch and the pulmonary trunk.
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What are the cardiac veins?
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They take deoxygenated blood from the myocardium and drain it into the coronary sinus, which dumps it into the right atrium
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What are the Thebesian veins (Least Cardiac Veins)?
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Tiny veins that drain blood from the walls of the heart into all of the chambers
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What is the aortic arch?
What arteries stem from it? |
Where the ascending aorta curves.
-Brachiocephalic trunk -Left common carotid artery -Left Subclavian artery |
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What arises from the brachiocephalic trunk?
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The right common carotid and right subclavian arteries
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What are the divisions of the common carotid artery?
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the external carotid artery (supllies neck and scalp) and internal carotid artery (supplies orbits and cerebrum)
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Where do the vertebral arteries arise from?
What do they merge into? |
Arises from the subclavian artery...
...merge into basilar artery and then splits... |
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What is the cerebral arterial circle (aka Circle of Willis)?
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the internal carotid and vertebral arteries unite
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Name the arteries of the Upper Limb
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Subclavian->Vertebral->
-Axillary -Brachial -Radial -Ulnar (common interosseous) -Palmar Arches (deep and superficial) |
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Name the arteries of the Thorax
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Descending aorta gives off the intercoastal arteries
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Describe the L and R common Iliac arteries
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Split the end of the aorta.
Internal IA supplies the pelvic organs External IA becomes a femoral artery |
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What do genicular arteries do?
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Form collateral circulation around the knee
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Where does the femoral artery change to popliteal?
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at the Hiatus of Adductor magnus muscle
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What does the Popliteal artery divide into?
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Anterior and posterial tibial arteries
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