Understanding Human Body Systems

What is the smallest unit that makes up living things?

• Systems

• Cells

• Tissues

• Organs

How does Ricardo compare the human body to machines?

• Both are non-living

• Both have interconnected systems

• Both require fuel to operate

• Both are made of living cells

Which system includes the skeleton and provides body shape?

• Digestive System

• Skeletal System

• Nervous System

• Muscular System

What is the primary function of the muscular system?

• To circulate blood

• To move the body

• To protect organs

• To digest food

Which system is responsible for sending messages to the brain?

• Respiratory System

• Digestive System

• Nervous System

• Circulatory System

What does the digestive system do with food?

• Stores it

• Breaks it down into nutrients

• Excretes it

• Circulates it

Which system filters harmful substances from the blood?

• Excretory System

• Nervous System

• Circulatory System

• Respiratory System

What is the main role of the circulatory system?

• To send messages to the brain

• To excrete waste

• To deliver nutrients and oxygen

• To digest food

What do all body systems have in common?

• They do not require energy

• They function independently

• They are non-living

• They are made up of cells

What are cells described as in the lesson?

• The building blocks of the body

• The largest organ

• The main source of energy

• The smallest organ