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A & P Heart Quiz
Ventricular contraction phase of the cardiac cycle
Ventricular relaxation phase of the cardiac cycle, dilation state of the heart, the rest between systoles
Upper chamber of the heart
the two lower chambers of the heart, and they pump blood out to the lungs and body (thick walled chambers)
The heart has ________? Which are: Right atrium, left atrium, right ventricle, left ventricle
Blood leaves the heart through the _________?
Blood returns to the heart through the _______?
(General Circulation) carries blood from the heart and throughout all parts of the body
(Cardiopulmonary Circulation) Carries blood from the heart to the lungs and back to the heart
Apex of the heart
(Conical tip) lies on the diaphragm and points to the left of the body. It is here where the heartbeat is most easily felt and heard through the stethoscope.
Total volume of blood ejected from the heart per minute
Stroke volume X Heart Rate = Cardiac Output
60 ml X 80= 4,800 ml/min
Covering of the heart, loose fitting double layer sac that encloses the heart
(pericardial fluid) Fluid between the parietal pericardium and visceral pericardium which prevents friction as the heart beats
Middle layer of the heart, made of cardiac muscle, Contains the septum (thick muscular wall that completely seperates the blood on the right side from blood on the left side of the heart)
Smooth inner lining, permits blood to move easily through the heart without agglutinating (Clumping)
Pump during working phase of the heart cycle
Right Ventricle pumps blood into the lungs
Left Ventricle pumps blood to the tissues of the body
large venious blood vessels which bring deoxygenated blood to the right atrium from all parts of the body
(a trough in the posterior wall) that collects blood in the right atrium
Takes blood away from the right ventricle to the lungs for oxygen
bring oxygenated blood from the lungs to the left atrium
takes blood away from the left ventricle to the rest of the body
Heart Blood Flow
The heart has 4 valves which permit the blood flow in one direction only, these valves open and close during the contraction of the heart, preventing the blood from flowing backwards
________ Valves are located between the atria and the ventricles.
positioned between the right atrium and right ventricle
small fibrous strands connecting the edges of the tricuspid valve to the papillary muscle that are projections of the myocardium
(mitral valve) located between left atrium and the left ventricle
are located at the bases of large vessels that carry blood from the ventricles
Lubb dupp sounds- sounds made by the valves during the cardiac cycle
1st heart sound (S1) Sound made when the tricuspid and bicuspid (mitral) AV valve closes between the atria and ventricles (systole)
2nd heart sound (S2) Cause by the semilunar valves in the aorta and the pulmonary arteries closing (diastole)
Recieves oxygenated blood from pulmonary veins
(Pericardial Fluid) Fluid between the parietal pericardium and the visceral pericardium which prevents friction as the heart beats.
Receives deoxygenated blood from systemic veins
Sinoatrial Noda (SA Node)
Pacemaker of the heart
Heart Conduction Sequence
SA Node, AV Node, AV Bundle, Bundle Branches, Purkinje fibers, contraction of myocardium
Irregular Heart beat
Records electrical activity of the heart (ECG or EKG)
Slow heart rate less than 60 BPM
Fast heart rate more than 100 BPM