What is the primary function of the pulmonary circuit in the circulatory system?

• To deliver oxygenated blood to the body

• To carry deoxygenated blood to the lungs for oxygenation

• To transport nutrients to the cells

• To remove waste products from the body

Which valve does deoxygenated blood pass through when moving from the right atrium to the right ventricle?

• Mitral valve

• Aortic semilunar valve

• Tricuspid valve

• Pulmonary semilunar valve

Where does oxygenated blood enter the heart after returning from the lungs?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What is the role of the aorta in the systemic circuit?

• To carry deoxygenated blood to the lungs

• To transport oxygenated blood to the rest of the body

• To receive deoxygenated blood from the body

• To pump blood into the right atrium

Which vessels return deoxygenated blood to the right atrium of the heart?

• Pulmonary veins

• Aorta

• Superior vena cava, inferior vena cava, and coronary sinus

• Pulmonary arteries

What type of blood do the pulmonary veins carry?

• Deoxygenated blood

• Oxygenated blood

• Nutrient-rich blood

• Waste-laden blood

Through which valve does blood pass when moving from the left ventricle to the aorta?

• Tricuspid valve

• Pulmonary semilunar valve

• Mitral valve

• Aortic semilunar valve

What is the sequence of blood flow starting from the right atrium?

• Right atrium → Right ventricle → Pulmonary trunk → Lungs

• Right atrium → Left atrium → Left ventricle → Aorta

• Right atrium → Aorta → Left ventricle → Lungs

• Right atrium → Pulmonary veins → Left atrium → Aorta

What is the function of capillaries in the circulatory system?

• To pump blood throughout the body

• To exchange gases and nutrients with tissues

• To carry blood away from the heart

• To return blood to the heart

Which structure receives oxygenated blood from the pulmonary veins?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle