Understanding Cardiovascular Disease

What is a common misconception about clogged arteries?

• They are due to lack of exercise.

• They are a result of high blood pressure.

• They are caused by smoking.

• They are caused by eating too much butter.

What are the two main loops in the cardiovascular system?

• Arterial and venous circulation

• Pulmonary and systemic circulation

• Cardiac and respiratory circulation

• Oxygenated and deoxygenated circulation

What is the primary function of the tunica media in arteries?

• To store nutrients for the artery

• To protect the artery from external damage

• To regulate the diameter of the artery

• To provide a smooth surface for blood flow

What is the role of endothelial cells in arteries?

• To ensure smooth blood flow

• To store blood cells

• To contract and expand the artery

• To provide a high friction surface

What is the main function of the tunica externa in arteries?

• To store nutrients

• To facilitate gas exchange

• To give the artery its shape and structure

• To regulate blood pressure

What is arteriosclerosis?

• The increase in blood pressure

• The hardening of the heart muscle

• The buildup of plaque in an artery

• The dilation of blood vessels

What can lead to endothelial dysfunction in arteries?

• Low cholesterol levels

• High blood pressure

• Adequate sleep

• Regular exercise

How does smoking affect the cardiovascular system?

• It decreases the availability of nitric oxide.

• It improves blood circulation.

• It reduces the risk of arteriosclerosis.

• It increases the availability of nitric oxide.

What happens when a blood clot gets stuck in an artery supplying the heart?

• It causes arteriosclerosis.

• It results in high blood pressure.

• It leads to a heart attack.

• It causes a stroke.

Why is exercise recommended for preventing heart disease?

• It decreases the elasticity of arteries.

• It reduces the production of red blood cells.

• It increases bad cholesterol levels.

• It improves the production of nitric oxide.