Quiz: Human Transport System

What is the main organ of the human circulatory system?

• Lungs

• Brain

• Heart

• Kidney

What type of circulation carries blood from the heart to the lungs and back?

• Systemic circulation

• Pulmonary circulation

• Lymphatic circulation

• Open circulation

Which blood vessels carry blood *away* from the heart?

• Veins

• Capillaries

• Arteries

• Venules

Which part of blood helps in oxygen transport?

• Plasma

• White blood cells

• Red blood cells

• Platelets

What is the function of white blood cells (WBC)?

• Clotting of blood

• Fighting infections

• Carrying carbon dioxide

• Absorbing nutrients

Which component of blood is responsible for clotting?

• Platelets

• Red blood cells

• White blood cells

• Plasma

Capillaries are important because they...

• Pump blood

• Connect arteries and veins

• Filter blood

• Carry oxygen to the lungs

Which part of the heart receives deoxygenated blood?

• Left atrium

• Right atrium

• Left ventricle

• Aorta

What separates the left and right chambers of the heart?

• Blood vessels

• Valves

• Septum

• Capillaries

Why is the heart called a double pump?

• It has four valves

• It pumps blood twice – once to the lungs and once to the body

• It beats twice every second

• It has two chambers