Circulatory System Basics

What is the main function of the heart in the circulatory system?

• To pump blood throughout the body

• To regulate body temperature

• To digest food

• To heat the body

Describe the structure of the heart including its chambers and valves.

• The heart has five chambers (three atria and two ventricles) and five valves (tricuspid, pulmonary, mitral, aortic, and septal).

• The heart has two chambers (one atrium and one ventricle) and two valves (tricuspid and mitral).

• The heart has four chambers (two atria and two ventricles) and four valves (tricuspid, pulmonary, mitral, and aortic).

• The heart has three chambers (one atrium and two ventricles) and three valves (tricuspid, pulmonary, and mitral).

What are the three types of blood vessels in the circulatory system?

• Arteries, veins, and arteries

• Arteries, veins, and capillaries

• Arteries, veins, and lymphatic vessels

• Veins, capillaries, and arteries

Explain the difference between arteries and veins.

• Arteries carry deoxygenated blood, veins carry oxygenated blood.

• Arteries are thin-walled, veins are thick-walled.

• Arteries have valves, veins do not have valves.

• Arteries carry oxygenated blood, veins carry deoxygenated blood.

What is the role of capillaries in the circulatory system?

• Capillaries facilitate the exchange of oxygen, nutrients, and waste products between the blood and tissues.

• Capillaries transport hormones in the circulatory system.

• Capillaries store excess nutrients in the circulatory system.

• Capillaries regulate body temperature in the circulatory system.

How does blood flow through the circulatory system starting from the heart?

• Heart -> Veins -> Capillaries -> Arteries -> Venules -> Arterioles -> Heart

• Heart -> Capillaries -> Arteries -> Veins -> Venules -> Arterioles -> Heart

• Heart -> Arteries -> Veins -> Capillaries -> Venules -> Arterioles -> Heart

• Heart -> Arteries -> Arterioles -> Capillaries -> Venules -> Veins -> Heart

What is the purpose of the pulmonary circulation in the circulatory system?

• To regulate body temperature by circulating blood through the skin.

• To transport blood from the heart to the brain and back.

• To transport oxygenated blood from the heart to the lungs and deoxygenated blood back to the heart.

• To transport deoxygenated blood from the heart to the lungs and oxygenated blood back to the heart.

What is the largest artery in the human body?

• Femoral artery

• Radial artery

• Carotid artery

• Aorta

What is the function of the vena cava in the circulatory system?

• To pump oxygenated blood to the body

• To return deoxygenated blood from the body back to the heart.

• To produce red blood cells

• To regulate blood pressure

How does blood pressure play a role in the function of blood vessels?

• Blood pressure has no impact on blood vessel function

• Blood pressure is only relevant for heart function, not blood vessels

• Blood pressure causes blood vessels to shrink in size

• Blood pressure helps maintain the structural integrity of blood vessels and influences the rate of blood flow.