Human Body System (basic)

The main purpose of the ____________ system is to break food particles into pieces that can be used.

• circulatory
• respiratory
• digestive
• skeletal

What is responsible for delivering oxygen and removing carbon dioxide from the body?

• skeletal system

• circulatory system

• nervous tissue

• respiratory system

The __________ is the main organ of the nervous system.

• heart
• lungs
• brain
• skin

Which of the following body systems work together for support, protection, and movement?

• respiratory and circulatory

• skeletal and muscular

• skeletal and respiratory

• digestive and respiratory

Your skeletal system is in charge of making your blood.

• True

• False

Adult humans have ______ bones in their bodies, on average.

• 106

• 306

• 206

The ribs protect your...

• heart

• lungs

• all of the above

The part of the bone that makes blood cells is...

• compact bone

• spongy bone

• bone marrow

The ribs protect your...

• heart

• lungs

• all of the above

The part of the bone that makes blood cells is...

• compact bone
• spongy bone
• marrow