Magic School Bus: Circulatory System

Ralphie says that if Ms. Frizzle wants to win the teachers triathlon, she's got to have _________.

• time to exercise

• time to train

• muscles

What is the "pump" that Ms. Frizzle's aunt is talking about?

• heart

• stomach

What important gas is used to make energy that Ms. Frizzle isn't getting because she is trying to get rid of her hiccups by holding her breath?

• Carbon dioxide

• Oxygen

What is the first stop on the "Air Express"?

• heart

• stomach

• lungs

What path does the blood take through the heart?

• heart - lung - heart- body

• heart-body-lungs-heart

• heart - lungs - body - heart

What do you think is happening in this part of the Ms. Frizzle model?

• The oxygen from the lungs is going into the blood.

• The blood is moving into the oxygen into the lungs

Why do you think Ms. Frizzle's blood is moving faster than Ralphie's who was resting?

• Ms. Frizzle is taller so her blood moves faster,

• Ms. Frizzle's muscles need more oxygen when working then they do when resting.

• This isn't real and there is no way to tell. 

What do you think the "white stuff" is that the muscles are "breathing" in?

• carbon dioxide

• oxygen

• sugar

• nutrients

So when Ms. Frizzle held her breath, her muscles didn't get the ______________ that they needed.

• carbon dioxide

• water

• oxygen

With enough time, the blood will clean out the waste and bring in enough _____.

• carbon dioxide

• oxygen

• water