Body systems part 1

Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. The digestive system consists of a series of connected organs that together, allow the body to break down and absorb food, and remove waste. The endocrine system consists of eight major glands that secrete hormones into the blood. The immune system is the body’s defense against bacteria, viruses and other pathogens that may be harmful. The lymphatic system includes lymph nodes, lymph ducts and lymph vessels, and also plays a role in the body’s defenses. Its main job is to make and move lymph, a clear fluid that contains white blood cells, which help the body fight infection.

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