Biology EOC Review: Cardiovascular System

What organ is responsible for blood flow?

• Heart

• Stomach

• Brain

• Lungs

How does the blood vessel diameter affect blood flow?

• It decreases because blood can take its time

• It has no effect on blood volume

• It increases because there is more room

• It changes color from blue to red.

What is atherosclerosis?

• A blockage in the artery due to damage

• One of the things that can decrease blood flow & cause heart attacks.

• A widening of the arteries

• An enzyme that cleans blood

The heart pumps blood through the body. If blood pressure is higher that means

• blood flow will increase

• blood pressure is lower
• the heart is resting
• the heart is working harder

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Viscosity is the thickness of a liquid. High viscosity means it is thicker. What happens to blood with low viscosity?

• It will decrease flow because it will stick to the walls

• It will increase flow because it is easier to move

• It will decrease flow because there is too much of it

• It will increase flow because it has more oxygen

How does exercise affect blood flow?

• It will increase blood flow over time

• It will decrease blood flow right away

• It will increase blood flow right away

• It will decrease blood flow over time

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How does increased blood flow affect the heart?

• It makes it work harder

• It makes it stronger

• It may wear out over time

• The heart will not be affected

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Human blood changes from blue to red based on how much oxygen is in it.

• True

• False

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How can you keep your heart healthy?

• Drink water

• Exercise

• Eat healthy food

• See if heart disease is in your family

Which of the following will increase blood flow in your body?

• Exercise

• Heart Disease

• Larger artery diamater

• Drinking water