From Cell to System

What is the primary function of red blood cells in the human body?

• To fight infections

• To carry oxygen to all parts of the body

• To absorb nutrients

• To produce hormones

Which type of tissue is responsible for covering and protecting the body surfaces?

• Connective tissue

• Muscle tissue

• Epithelial tissue

• Nervous tissue

What is the main function of the liver in the human body?

• To store calcium

• To pump blood

• To filter toxins and produce bile

• To transmit nerve signals

Which organ system is the liver a part of?

• Circulatory system

• Nervous system

• Digestive system

• Respiratory system

How do organ systems contribute to the functioning of the human body?

• By competing with each other

• By working independently

• By working together to maintain balance

• By only supporting the digestive process