AP BIOLOGY

Detailed explanation-1: -The valves between the atria and ventricles are called atrioventricular valves (also called cuspid valves), while those at the bases of the large vessels leaving the ventricles are called semilunar valves. The right atrioventricular valve is the tricuspid valve.

Detailed explanation-2: -the tricuspid valve, located between the right atrium and the right ventricle; the pulmonary valve, between the right ventricle and the pulmonary artery; the mitral valve, between the left atrium and left ventricle; and. the aortic valve, between the left ventricle and the aorta.

Detailed explanation-3: -The mitral and tricuspid atrioventricular (AV) valves separate the atria from the ventricles, while the aortic and pulmonary semilunar (SL) valves separate the ventricles from the great arteries. AV valves have leaflets and SL valves have cusps.

Detailed explanation-4: -The aptly named atrioventricular heart valves are situated between the atria and ventricles and are oriented such that their leaflets open by protruding into the ventricles as the heart rests during diastole, allowing blood to fill the ventricular chambers.

Detailed explanation-5: -The right atrioventricular valve has three cusps, and is therefore called the tricuspid valve, while the left atrioventricular valve has two cusps, and is known as the bicuspid or mitral valve-mitral because it is said to resemble a bishops mitre.