Organ system

• large, complex organisms need many levels of organization to ensure all cells get what they need to perform life function. body system
• provides support, protection of internal organs, production of blood cells and attachment sites for the organs. skeletal system
• provides movement, maintains posture, and produces heat. muscular system
• breaks down food and absorbs nutrients that are important for growth and maintenance. digestive system
• circulates or carries blood throughout our body. circulatory system
• bring oxygen, eliminate carbon dioxide and provides gas exchange between the blood and the environment. respiratory system
• remove or filter out cellular wastes, toxins, and excess water or nutrients. excretory system
• it is a collection of glands that produce hormones that regulate metabolism, growth and development. endocrine system
• relays signals through the body that direct behavior and regulate internal processes. The nervous system
• a complex network of specific immune cells and proteins that protect the body against diseases and harmful agents. immune system
• 206 bones and 600 muscles