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Human Anatomy 4.1

The heart

QuestionAnswer
What in the cardiac cycle means contraction? Systole
What in the cardiac cycle means relaxation? Diastole
Conduction system components in order SA -> AV -> His bundle -> bundle branches -> purkinje
Sinoatrial node (SA) is considered the... Pacemaker
What circulation carries blood to and from lungs / gas exchange? Pulmonary
What circulation transports blood to and from the body? Systemic
Atrioventricular valves prevent backflow from... Ventricles to atria
Rights side of the heart receives ______ blood. Deoxygenated
Left side of the heart receives _____ blood. Oxygenated
What are the 4 chambers of the heart? Right and left atriums, right and left ventricles
Layers of the heart Epicardium, myocardium, endocardium
The heart is held in place and enclosed by the... Pericardium
How much of the hearts mass lies to the left of the body? 2/3
Semilunar valves prevent backflow from... Arteries to ventricles
_____ is the volume of blood ejected by the right and left ______ into aorta or pulmonary veins each _____ Cardiac output, ventricles, minute
What is the lower pointed part of the heart called? Apex
What part of the pericardium reduces friction as the heart moves? Pericardial cavity
What sulcus separates the atria from ventricles? Coronary sulcus
What sulcus separates the left and right ventricles? Anterior interventricular sulcus
Heart is located between... Lungs and mediastinum
What is the upper broader part of the heart called? Base
Right ventricle sends blood to _______ The lungs
Left ventricle sends blood to ______ The body
What part if the pericardium prevents overstretching? Outer fibrous
What cell is the pacemaker and sets contraction rythm? Autorhythmic cells
What do the chordae tendineae do in ventricle? Prevent backflow into atrium
What valves make the "lub" sound when opned? Atrioventricular valves (tricuspid and bicuspid)
What valves make the "dub" sound when opened? Semilunar valves (pulmonary and aorta)
Right and left _____ contract and push blood against _______ making them open, blood flows into the ______, it contracts pushing blood against the ________ making them open, blood runs out of the heart Atrium, atrioventricular valves, ventricle, semilunar valves
Created by: LaurenNeer
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