Organs and Organ Systems? Type of system found in human body?

     Organs and Organ Systems


Your body is an amazing machine! Tissues are organized into organs and organs are 
organized into organ systems. Get ready—in the upcoming lessons in this learning 
package you will learn about four of the major body systems:
• the circulatory system
• the respiratory system 
• the digestive system
• the excretory system

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