Second Quarter Examination in Science IV

What is the main function of muscles?

• To pump blood

• To help the body move

• To break down food

• To breathe

What are bones made of?

• Muscle

• Blood

• Calcium

• Skin

What is the main function of the skeleton?

• To pump blood

• To help the body move

• To break down food

• To breathe

What is the first part of the digestive system that food enters?

• Stomach

• Mouth

• Intestine

• Liver

Which organ helps break down food into smaller pieces?

• Heart

• Lungs

• Teeth

• Brain

What is the main function of the circulatory system?

• To help the body move

• To break down food

• To carry blood throughout the body

• To breathe

What is the main organ of the circulatory system?

• Brain

• Heart

• Lungs

• Liver

What do we breathe in?

• Water

• Food

• Oxygen

• Carbon dioxide

What is the main organ of the respiratory system?

• Heart

• Lungs

• Brain

• Stomach

What do we breathe out?

• Oxygen

• Carbon dioxide

• Water

• Food