Circulatory System Quiz

What components make up the circulatory system in most animals?

• Blood, a pump (a heart), and blood vessels

• Lungs, liver, and kidneys

• Skin, muscles, and bones

• Stomach, intestines, and pancreas

What is the primary function of the circulatory system?

• To digest food and absorb nutrients

• To transport oxygen and nutrients to the body and carry waste like carbon dioxide away

• To protect the body from external harm

• To store energy and regulate temperature

What is the primary function of the heart in the human body?

• To pump blood throughout the body

• To digest food

• To filter waste from the blood

• To produce hormones

Which type of blood vessel carries blood away from the heart?

• Veins

• Arteries

• Capillaries

• Lymphatic vessels

What is the role of blood vessels in the circulatory system?

• To store oxygen

• To transport blood throughout the body

• To produce red blood cells

• To break down nutrients

What are the main components of the circulatory system?

• Blood, heart, and blood vessels

• Lungs, heart, and blood vessels

• Blood, lungs, and arteries

• Heart, veins, and capillaries

What is the function of valves in the circulatory system?

• To increase blood pressure

• To prevent backflow and ensure one-way flow of blood

• To decrease blood flow

• To exchange oxygen and nutrients

Through which type of blood vessels does blood return to the heart?

• Arteries

• Capillaries

• Veins

• Valves

Where does the exchange of oxygen, nutrients, and waste occur in the circulatory system?

• Arteries

• Capillaries

• Veins

• Heart

What is the primary function of the heart in blood circulation?

• To store blood

• To filter blood

• To act as a pump to maintain one-way blood flow

• To produce blood cells