Circulatory System Quiz

What is one of the key functions of the circulatory system?

• Transports oxygen and nutrients throughout the body

• Produces hormones

• Breaks down food

• Filters waste from the blood

Which of the following is transported by the circulatory system to maintain homeostasis?

• Oxygen

• Heat

• Enzymes

• Vitamins

What does the circulatory system remove from tissues?

• Nutrients

• Oxygen

• Wastes

• Hormones

Which of the following is NOT a function of the circulatory system?

• Transports hormones

• Distributes heat

• Removes wastes

• Produces energy

What is the heart primarily composed of?

• Bone

• Muscle

• Fat

• Cartilage

What is the function of cardiac muscle?

• To digest food

• To filter blood

• To pump blood through the circulatory system

• To store energy

What is the thick muscle layer of the heart called?

• Endocardium

• Epicardium

• Myocardium

• Pericardium

What is the protective outer layer of the heart called?

• Endocardium

• Epicardium

• Myocardium

• Pericardium

How many chambers is the heart divided into?

• Two

• Three

• Four

• Five

What is the function of the septum in the heart?

• It pumps blood to the body

• It separates oxygen-poor and oxygen-rich blood

• It stores oxygen

• It regulates heart rate