Review

Which organ continuously pumps oxygen-rich blood to all parts of the body?

• Lungs

• Heart

• Liver

• Brain

What happens to food inside the stomach?

• It is absorbed into the blood.

• It is broken down by digestive juices.

• It is stored for energy.

• It becomes waste.

What is the main function of the rib cage?

• To help with digestion

• To produce blood cells

• To protect vital organs

• To pump oxygen

Which pair of organs works directly with the circulatory system to supply oxygen to the blood?

• Kidneys

• Lungs

• Intestines

• Muscles

Where does most nutrient absorption take place?

• Stomach

• small intestine

• large intestine

• Mouth

What is the main role of the large intestine?

• To absorb nutrients

• To remove water and form waste

• To pump blood

• To digest protein

Which of the following best describes a cell?

• A group of organs

• The smallest unit of life

• A type of tissue

• A large body system

What do several tissues working together form?

• An organ

• A system

• A skeleton

• A muscle

Which of the following is an example of an organ system?

• Heart

• Stomach

• Digestive system

• Brain

Which system carries food nutrients and oxygen throughout the body?

• Nervous system

• Circulatory system

• Digestive system

• Muscular system