Body Systems

What is the main function of the respiratory system?

• to provide oxygen and remove carbon dioxide from the body
• to bring oxygen to the body
• to break down food and absorb nutrients
• to remove oxygen from the body and deliver carbon dioxide

When you breathe, your lungs take in _________ and remove ___________.

• air/oxygen

• oxygen/carbon dioxide

• carbon dioxide/waste

• waste/air

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory
• digestive
• muscular
• skeletal

The circulatory system works with the __________ system to obtain energy from nutrients that we eat. 

• respiratory 
• digestive
• skeletal
• nervous

Reflexes are associated with the nerves.

• true

• false

The basic structural unit of the nervous system.

• dendrite

• bladder

• neuron

• kidney

This system carries food, gasses, and wastes throughout the body

• circulatory system

• respiratory system

• nervous system

• skeletal system

This system allows the body to take in oxygen and get rid of waste gases.

• nervous system

• muscular system

• respiratory system

• excretory system

This system includes over 200 bones and it is where the red blood cells are stored and made.

• skeletal system

• respiratory system

• nervous system

• endocrine system

Which system takes food into the body, breaks down food, and absorbs the materials?

• respiratory

• circulatory

• digestive

• excretory