Heart Function Breanna

How is the heart different from the other muscles in your body?

• it's not made out of muscles tissue
• it never gets tired
• it needs at least 10 hours of rest per day
• it is much smaller that your other muscles

What substance is in the blood that the heart pumps throughout your body?

• calcium
• mucus
• carbon dioxide
• oxygen

What is the main difference between your ventricles and your atria?

• A bring blood into the heart; V pump it out
• A enrich blood with oxygen; V remove it
• A are connected to your arteries; V are connected to your veins
• A are made of muscle; V are made of fatty tissue

Place in order:
A. Atria fill with blood
B. Valve between ventricles and atria close
C. Blood is pushed out of the heart

• A C B
• B C A
• A B C 
• B A C

Which body part is roughly the same size as your heart?

• fist
• brain
• bicep
• foot

What happens after old blood, which has already circulated through the body, moves into the heart?

• it goes to kidneys, where it is removed
• it is recirculated through the body
• it goes to lungs for more oxygen
• it is removed through the digestive system

What role does your brain play in circulation?

• it tells the body where blood is needed most
• it signals the heart to beat
• it signals the lungs to enrich the blood with oxygen
• it signals the arteries and veins to open and close

What word best describes the beating of the heart and the circulation of blood?

• voluntary
• infrequent
• intermittent
• automatic

What can you infer from the fact that your heart beasts faster when you exercise?

• your muscles need more oxygen
• you feel especially nervous
• your brain becomes hyperactive
• your cells need more carbon dioxide

How long does it take for your heart to pump blood through your entire body?

• 1 minute
• 7 minutes
• 15 minutes
• 30 minutes