What is the primary function of the circulatory system?

• To digest food

• To produce hormones

• To store energy

• To transport oxygen and nutrients to body cells

Where is the heart located in the human body?

• In the center of the chest between the lungs

• In the lower back

• In the abdomen

• In the neck

What is plasma?

• A type of blood cell

• A stroke-colored fluid that makes up about 55% of blood

• A type of blood vessel

• A part of the heart

Which blood vessels carry oxygen-rich blood away from the heart?

• Capillaries

• Veins

• Lymphatic vessels

• Arteries

What is the main function of pulmonary circulation?

• To transport nutrients to the liver

• To carry blood to the lungs for gas exchange

• To supply blood to the heart

• To remove waste from the kidneys

What is the role of coronary circulation?

• To move blood between the heart and lungs

• To carry blood to the brain

• To supply blood to the heart tissues

• To transport blood to the digestive system

How many chambers does the human heart have?

• Two

• Three

• Four

• Five

What prevents the mixing of oxygenated and deoxygenated blood in the heart?

• The valves

• The septum

• The arteries

• The veins

Which chamber of the heart receives oxygenated blood from the lungs?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What is the function of the mitral valve?

• To transport blood to the brain

• To prevent blood from flowing backward between the right atrium and right ventricle

• To prevent blood from flowing backward between the left atrium and left ventricle

• To connect the heart to the lungs