Human Body Organization

Cells, Tissues, Organs, Organs Systems

The Order

In the human body there is an order to how your organs and organ systems are made starting with cells. The cells is one of the most basic things in your body. When cells work together they make tissues. These tissues are put into four categories. Nervous tissue, epithelial tissue, muscle tissue, and connective tissue. Tissues work together to make organs. Organs then work together to make organ systems.


Homeostasis is when organs and organ systems work together to make reactions to things that happen to the body. For example if you jump it to cold water your body will react to that by the Nervous system saying oh it cold. This then feeds back to your brain which tells your heart to take blood away from the skin.

Body Systems

12 Systems

The 12 organ systems are Lymphatic system defense from against infection, cardiovascular system transport oxygen, hormones and nutrients to the body cells. The Digestive system digests and absorbs nutrients from food, Endocrine system that controls the hormones that go through your body, Integumentary system protects from the loss of water and injury, muscular system allows you to move support your body while standing keeps heat in. The Nervous system the system that carries information throughout the body to the brain, Reproductive system the system to allow offspring production, the respiratory allows the air to travel inside you. Skeletal stores needed minerals and gives basic structure to the body, Urinary Removes extra water, salts, and waste that the body doesn't need, the immune is defense against diseases