Human Systems

Which organ belongs to the digestive system?

• heart
• stomach
• femur
• brain

What is the term for the smallest unit of life?

• cell

• tissue

• organ

• organ system

What is the function of the respiratory system

• Take in O2 only
• Remove CO2 only
• Take in O2 ad remove CO2
• Make sugar

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

The heart has ___ chambers.

• 1
• 2
• 3
• 4

Your heart is about the size of your __________.

• mouth

• fist

• show

Which organ controls our senses?

• heart

• brain

• lungs

• stomach

Which organ helps break down food?

• heart

• stomach

• lungs

• brain

What organ is this?

• heart

• stomach

• lungs

• brain

What organ is this?

• heart

• stomach

• liver

• lungs