Human Body Systems

The human body system that breaks down food so it can be used by the body.

• Respiratory

• Circulatory

• Digestive

• Muscular

Answer explanation

The average person produces 2 pints of saliva every day. That is 32 ounces, or 2 cans of soda.

The human body system that moves the body.

• Respiratory

• Circulatory

• Skeletal

• Muscular

Answer explanation

The gluteus maximus is the body's largest muscle.

The human body system that takes in oxygen for the body and lungs and releases carbon dioxide.

• Respiratory

• Circulatory

• Skeletal

• Muscular

Answer explanation

The human body system that send messages throughout the body and controls the other body systems.

• Respiratory

• Nervous

• Skeletal

• Muscular

Answer explanation

Ever see a picture of a person with a light bulb over their heads? Well this fact puts a whole new light on those pictures (“new light” – get it?). Did you know that your brain actually produces enough electricity to power a light bulb? Yep, it’s true! It would be cool to know how to actually power up that light bulb with our brains, maybe someday we’ll know.

The human body system that gives the body structure and support while protecting vital organs.

• Respiratory

• Circulatory

• Skeletal

• Muscular

Answer explanation

The human body system that uses the heart to pump blood throughout the body to carry oxygen, food, and wastes.

• Respiratory

• Circulatory

• Skeletal

• Muscular

Answer explanation

Your heart pumps about 2,000 gallons of blood every day!

The body has several organ systems. Which organ system is pictured here?

a

nervous system

skeletal system

digestive system

muscular system

circulatory system

respiratory system

Skeletal muscles are attached to the (a)   .

• Stomach
• Lungs
• Bones
• Involuntary Muscles

Voluntary muscles you ​ (a)   control while involuntary muscles you ​ (b)   control by thinking

• Can
• cannot

The body has several organ systems. Which organ system is pictured here?

c

nervous system

circulatory system

respiratory system

muscular system

skeletal system

digestive system