Circulatory System

Which type of cell is responsible for carrying oxygen in the blood?

• Neurons

• Red blood cells

• White blood cells

• Platelets

What is the main role of platelets?

• Carrying oxygen

• Fighting infections

• Transmitting nerve signals

• Clotting blood

Which of the following cells is not considered to be a part of the circulatory system?

• Neurons

• Red blood cells

• White blood cells

• Platelets

What substance in red blood cells binds to oxygen?

• Plasma

• Hemoglobin

• Antibodies

• Neurons

Which organ is primarily responsible for pumping blood in the circulatory system?

• Brain

• Heart

• Lungs

• Liver

The primary function of the heart in the circulatory system is to ______ blood.

• filter

• pump

• store

• absorb

What are the main components of the circulatory system?

• A) Blood, heart, and lungs

• B) Blood, heart, and blood vessels

• C) Heart, lungs, and kidneys

• D) Blood vessels, lungs, and liver.

What is the primary function of blood in the body?

• To circulate oxygen and nutrients

• To digest food

• To produce energy

• To store fat

Blood circulates through the heart and ______.

• Lungs

• Blood vessels

• Stomach

• Kidneys

What does blood carry away from the cells?

• Oxygen

• Nutrients

• Waste products

• Hormones