Heart structure
This is the thickest layer of the heart wall and is responsible for contraction.
Myocardium
The heart has this many chambers.
4
This valve is located between the right atrium and right ventricl
tricuspid valve
These arteries supply oxygen-rich blood to the heart muscle.
coronary arteries
This node is known as the heart’s pacemaker.
sinoatrial (SA) node
The heart is located in this area of the body between the lungs.
Thorax
These two upper chambers of the heart receive blood.
atria
This valve prevents backflow from the aorta into the left ventricle.
aortic semilunar valve
This large artery receives blood from the left ventricle.
Aorta
This node delays the electrical impulse before it reaches the ventricles.
atrioventricular (AV) node
This outermost layer of the heart is also known as the visceral pericardium.
Epicardium
This chamber pumps oxygen-rich blood into the aorta
left ventricle
This valve is also called the mitral valve
bicuspid valve
This large vein collects blood from the coronary veins and empties into the right atrium.
coronary sinus
These specialized fibers distribute impulses through the ventricles.
Purkinje fibers
These three layers make up the heart wall.
endocardium, myocardium, and epicardium
This wall separates the left and right sides of the heart.
Septum
The chordae tendineae are also called these
‘Heart strings
These veins return oxygenated blood from the lungs to the left atrium.
pulmonary veins
This bundle transmits impulses between the atria and ventricles.
bundle of His (AV bundle)
This structure forms a protective sac around the heart and has a potential space between its layers.
pericardium
This chamber pumps oxygen-poor blood into the pulmonary circulation
right ventricle
This valve disorder can cause blood to leak back into the atrium
mitral valve regurgitation
This condition occurs when a coronary artery becomes blocked, leading to reduced blood flow.
myocardial infarction (heart attack)
This type of heart activity is recorded using an electrocardiogram (ECG).
electrical conduction