Biology Quiz: Circulatory System

What components make up the circulatory system?

• Heart, blood vessels, and blood

• Lungs, heart, and veins

• Brain, heart, and arteries

• Stomach, intestines, and blood

What is a 'double circulatory system'?

• Blood flows in two directions simultaneously

• Blood circulates only once through the body

• Blood passes through the heart twice per cycle

• Blood is oxygenated twice in the lungs

What is the primary function of the coronary arteries?

• Connect the heart to the brain

• Carry deoxygenated blood to the liver

• Transport oxygenated blood to the lungs

• Supply blood to the heart muscle

Which of the following best describes the structure of the heart?

• A solid organ with no chambers

• A muscular organ with four chambers

• A single-chambered organ

• A hollow organ with two chambers

What is the correct route of blood flow through the heart?

• Right atrium, right ventricle, lungs, left atrium, left ventricle

• Right ventricle, right atrium, lungs, left ventricle, left atrium

• Left atrium, left ventricle, lungs, right atrium, right ventricle

• Left ventricle, left atrium, lungs, right ventricle, right atrium