What are 2 categories of valves found in the heart? How many total valves are found in the heart? Name all 4 valves in the heart tell which are AV which are SL.

## Step 1<br />The heart is a vital organ in the human body that pumps blood throughout the body. It has a complex structure, including valves that ensure the unidirectional flow of blood. The valves in the heart are categorized into two main types: atrioventricular (AV) valves and semilunar (SL) valves.<br /><br />## Step 2<br />The atrioventricular (AV) valves are located between the atria and ventricles. There are two AV valves in the heart: the tricuspid valve and the mitral valve. The tricuspid valve is located between the right atrium and right ventricle, while the mitral valve is located between the left atrium and left ventricle.<br /><br />## Step 3<br />The semilunar (SL) valves are located at the exits of the ventricles. There are two SL valves in the heart: the pulmonary valve and the aortic valve. The pulmonary valve is located between the right ventricle and the pulmonary artery, while the aortic valve is located between the left ventricle and the aorta.<br /><br />## Step 4<br />In total, there are four valves in the heart: two AV valves (tricuspid and mitral) and two SL valves (pulmonary and aortic).