End of Semester 1

What does your heart do to keep you alive?

• Pumps hormones throughout your body.

• Pumps.

• Pumps oxygenated blood throughout your body.

• Brings air into your lungs.

Answer explanation

We breathe in oxygen which goes through our lungs and then to our heart. The heart pumps that oxygenated blood throughout the body. The deoxygenated blood gets pumped back to the heart so that the cycle can continue.

Why does your heart pump faster when you exercise?

• Your heart becomes less effective during exercise.

• You have higher blood volume during exercise.

• It just does.

• Your body and muscles need more oxygen to keep up while you exercise.

Which chemical is NOT a happy chemical released during exercise?

• Cortisol

• Seretonin

• Endorphins

• Dopamine

What causes you to burn more calories throughout the day?

• Cardio exercise.

• Eating 3 meals a day.

• Muscle. It has more mitochondria which raises your metabolism.

• Eating foods that lower your mitochondria levels.

Consistent exercise causes lower blood pressure and a lower resting heart rate over time.

• True

• False

You want to be below your target heart zone while exercising.

• True

• False

What happens to our recent memories in our brain while we sleep?

• We re-live the memories while we sleep.

• They stay stored in our short term memories.

• They are forgotten.

• They solidify and transfer from short term memories to long term memories.

People your age should be getting at least _ hours of sleep each night.