Heart and Circulation Flashcards
What are the four parts of the cardiovascular system?
Heart
Arterial system
Microcirculation
Venous system
What valve lies between the RA and RV?
Tricuspid
What valve lies between the LA and LV?
Mitral valve
Where does the heart lie?
Lies centrally in the chest, between the lungs and pleura, in the middle mediastinum
What surrounds the heart?
Pericardial sac
Lined with serous fluid
What is the right auricle?
Extension of right atrium
what forms the base of the heart?
Left atrium
What do blood vessels vary in?
Number
Diameter
Wall thickness
Smooth muscle
elastic tissue
Fibrous tissue
What anatomical feature is present before birth in the heart?
Foramen ovale
What is the fossa ovalis?
The closing of the flap, foramen ovale, between the two atriums in babies before birth
What are the three entries for deoxygenated blood into the heart?
Super vena cava
Inferior vena cava
Coronary sinus
How many pulmonary veins enter the left atrium?
4
What muscles control the valves in the heart?
Papillary muscle
What does LAB RAT stand for?
Left Atrium Bicuspid
Right Atrium Tricuspid
What arteries supply the heart and where do they originate from?
Right and left coronary artery
Arise from the aortic sinuses
