Circulatory System

The top two chambers in the heart are the right and left atrium and they receive blood entering the heart.

• True

• False

What are veins?

• Veins are blood vessels that carry oxygenated blood away from the heart.
• Veins are a type of muscle tissue that helps in circulation.
• Veins are responsible for pumping blood throughout the body.
• Veins are blood vessels that carry blood back to the heart.

What is a platelet?

• A platelet is a hormone produced by the liver.
• A platelet is a small a cell that helps blood clot if a person gets cut.

• A platelet is a type of white blood cell.
• A platelet is a protein found in muscle tissue.

The blood delivers what to your body?

• Heat and energy
• Hormones and enzymes
• Carbon dioxide and waste
• Oxygen and nutrients

Why does the heart beat faster when you are exercising?

• The heart beats faster to cool down the body during exercise.
• The heart beats faster to release more hormones into the bloodstream.
• The heart beats faster to increase body temperature during exercise.
• The heart beats faster to supply more oxygen and nutrients to the muscles during exercise.

What is the job of the circulatory system?

• To facilitate breathing and gas exchange.
• To provide structural support to the body.
• To digest food and absorb nutrients.
• The job of the circulatory system is to pump blood to all parts of the body.

How many beast per minute is usual for your heart rate?

• 60 to 100 beats per minute
• 40 to 60 beats per minute
• 100 to 120 beats per minute
• 120 to 150 beats per minute

The _____ is at the center of the circulatory system.

How many main blood types are there?

• 1

• 2

• 3

• 4

What are arteries?

• Arteries carry deoxygenated blood back to the heart.
• Arteries are responsible for filtering blood in the kidneys.
• Arteries are blood vessels that carry blood away from the heart to the rest of the body.

• Arteries are the main components of the digestive system.