Human Body Systems 7th Grade

Respiration involves supplying your body's cells with - ?

When you breathe, your lungs take in oxygen and remove - ?

How many bones are in the human body?

Which body system includes thethree layers of skin that function to protect deeper tissue?

What process involves muscle contractions that move food through the esophagus?

The largest organ in the body isthe –

Do bones have a nuclei?

What body system works together to transfer oxygen in to your blood stream?

The middle layer of the skin iscalled –

What is the fatty layer of the skin called?

What type of muscle is the heart composed of?

Which body system provides astructural support for the body and its muscles?

Which body system is responsiblefor the movement of the body, and movement of internal organs?

The top layer of the skin iscalled –

What substance in the mouth contains an enzyme that begins chemical digestion?

Which body system forms a protective barrier between exterior and internal bodysystems?

The type of muscle that used for most internal organs is called a –