Right atrium and ventricle

What is the primary function of the tricuspid valve?

• To pump blood into the left atrium

• To prevent backflow of blood into the right atrium

• To oxygenate the blood

• To separate the left and right ventricles

Which vessels bring deoxygenated blood into the right atrium?

• Aorta

• Pulmonary veins

• Coronary arteries

• Superior and inferior vena cava

What are the chordae tendineae primarily composed of?

• Bone tissue

• Muscle fibers

• 80% collagen and 20% elastin and endothelial cells

• Cartilage

What is the role of the fossa ovalis in fetal development?

• To separate the ventricles

• To allow blood flow from the right atrium to the left atrium

• To oxygenate the blood

• To pump blood into the lungs

Where are the pectinate muscles located?

• In the pulmonary arteries

• In the walls of the atria of the heart

• In the aorta

• In the ventricles of the heart

What is the function of the crista terminalis?

• To connect the atria and ventricles

• To oxygenate the blood

• To pump blood into the left ventricle

• To separate the pectinate muscles from the smooth surface of the right atrium

What is the conus arteriosus also known as?

• Mitral valve

• Infundibulum

• Aortic arch

• Pulmonary vein

What is the role of the pulmonary valve?

• To oxygenate the blood

• To separate the left and right ventricles

• To pump blood into the left atrium

• To prevent blood from flowing back into the right ventricle during diastole

What is the function of the papillary muscles?

• To oxygenate the blood

• To separate the atria and ventricles

• To contract and prevent inversion or prolapse of the mitral or tricuspid valves

• To pump blood into the aorta

What is the significance of the interatrial septum?

• It connects the atria and ventricles

• It separates the two cardiac atria

• It pumps blood into the ventricles

• It oxygenates the blood