Becuase it supports you like your other systems
The skeletal system protects most systems, while the muscel system moves the bones.
The lymphatic system protects the skeletal system from disease. There is more, but that's the gist of it.
It works with all other systems . All systems in body are coordinated . The digestive system provides energy. The skeletal system protects it. Nervous system sends the signals. Circulatory system takes the oxygen rich blood and takes the oxygen poor blood back. The muscular system moves it. The immune system fights against diseases and protects it from sicknesses.
The skeleton protects the esophagus in the digestive system and leads the food safely through. The skeleton protects the heart, which is in most every system. The skeleton opens the mouth to allow air in and down your trachea. It works as a lever for the muscles to produce movement in the musculatory system, and protects the brain in the nervous.
The immune system protects the body from all foreign and invading microbe or agent.The immune system consist of -Lymphatic vessels - These carry lymph to all organs and sectors of the body.Lymph - This fluid carries WBC and other antigens which fight and destroy foreign agents.White blood cells - These cells are responsible for destroying foreign agents.There are 3 kinds of WBC -Monocytes - These WBC eat and digest foreign agents.Lymphocytes - These WBC produce antigens to destroy foreign agents.
the circulatory system helps other systems function because it circulates blood to the other systems in your body and that helps the other systems function because the other systems have to pass that through that system
The nervous system is closely related to the muscular system. The other would most likely be the circulatory system.
The immune systems protects the body from viruses. First you have your physical barriers like your skin, tears, hair and mucus then you have your immune system which are white blood cells and pus.
the skeletal system
The circulatory system affects the other body systems because the circulatory system gives oxygen to the other system. Without the circulatory system the other systems would not work.
the circulatory system helps other systems function because it circulates blood to the other systems in your body and that helps the other systems function because the other systems have to pass that through that system