The system that helps me breathe is called the...

• digestive system

• circulatory system

• respiratory system

The respiratory system organs are the....

• lungs, nose, trachea, and mouth.

• lungs, nose, trachea, and pancreas.

• liver, oesophagus, trachea, and mouth.

Which of these will probably happen if a student runs a lot?

• Hearing ability increases

• Heart rate slows down

• Breathing will become faster

People __________ and __________.

• breath in carbon dioxide......exhale carbon dixide

• breathe in oxygen......inhale carbon dioxide

• breathe in oxygen.....exhale carbon dioxide

The digestive system organs are....

• mouth, trachea, stomach, intestines

• stomach, intestines, esophagus, mouth

• mouth, intestines, stomach, vessels

Why is the digestive system important?

• It allows us to absorb nutrients from the food we eat.

• It transports red blood cells around the body.

• We get oxygen in our stomach that goes to the blood.

The organ that pumps blood around the body is the......

• vein

• artery

• heart

The function of the circulatory system is to...

• break down food so our body can absorb it.

• transport oxygen and nutrients around the body.

• transport nutrients and waste around the body.

What can we do to take care of our circulatory system?

• Play video games all day.

• Eat sweets every day.

• Exercise regularly.

What were some materials from our last experiment?

• Vinegar, water, salt, apple.

• Vinegar, apple, water, grater.

• Grater, fork, vinegar, apple