Allows blood to 

pass from the left

atrium to the  left

ventricle.

Posted by nada at 3:15 PM  No comments: 

Surround and

protect the heart

and lungs

Posted by nada at 3:08 PM  No comments: 

Posted by nada at 3:05 PM  No comments: 

The human body is very complicated inside the body there are different organs that need to work together to keep the body healthy. Those organs are grouped together into different systems depending on what they do.   

Digestive System: This system help us to get the energy from our food it is a tube  that starts in the mouth goes through the stomach and intestines at ends at the rectum.