Organ Systems

The main organ that works in our respiratory system is (are) ____

• brain

• blood vessels

• mouth

• lungs

The organs that produce urine are

• lungs

• intestines

• ribs

• kidneys

The place where carbon dioxide is exchanged with oxygen is ____

• 
• 
• 
• 

The function of this organ is absorbing nutrients. This organ is ____

• gall bladder

• esophagus

• large intestine

• small intestine

It controls all of the activities in human body.  The organ is ____

• brain

• heart

• liver

• nerve

Study the human organs below.

The body system that works using these organs is ____ system.

• nervous

• respiratory

• excretory

• circulatory

The function of our heart is ____.

• producing urine

• filtering the blood

• removing waste

• pumping the blood

The organ system that handling the food in our body is ___ system.

• respiratory

• excretory

• digestive

• circulatory

When we do activities our body produces ___ that is absorbed by the blood and then is transported into the heart.

• oxygen

• carbon dioxide

• urea

• excess water

The respiratory system works together with the ____ system so that all cells of the body receive oxygen. 

• nervous
• endocrine
• circulatory
• integumentary