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| The circulatory system is the body's transport system. It is made up of a group of organs that transport blood throughout the body. The heart pumps the blood and the arteries and veins transport it. |
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| The digestive system is made up of organs that break down food into protein, vitamins, minerals carbohydrates, and fats the body needs for energy, growth, and repair |
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| The endocrine is made up of a group of glands that produce the body's long-distance messengers or hormones. Hormones are chemicals that control body functions, such as metabolism, growth, and sexual development |
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| The immune system is the body's defense system against infection and diseases. Organs, tissues, cells, and cell products work together to respond to dangerous organisms (like viruses or bacteria) and substances that may enter the body from the environment. |
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| The lymphatic system is also a defense system for the body. It filters out organisms that cause diseases, produces white blood cells, and generates disease-fighting antibodies. It also distributes fluids and nutrients in the body & drains excess fluids and proteins so that tissues do not swell. |
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| The muscular system is made up of tissues that work with the skeletal system to control the movement of the body. Some muscles like those in arms and legs are voluntary, meaning that an individual decides when to move them. Other muscles, like the ones in the stomach, heart, intestines, and other organs are involuntary. This means that they are controlled automatically by the nervous system and hormones one often does not realize they are at work |
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| The nervous system is made up of the brain, the spinal cord, and nerves. One of the body's most important systems in the body, the nervous system is the body's control system it sends, receives, and processes nerve impulses throughout the body. These nerve impulses tell muscles and organs what to do and how to respond to the environment |
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| The reproductive system allows humans to produce children. Sperm from the male fertilizes the female's egg, or ovum in the fallopian tube. The fertilized egg travels from the fallopian tube to the uterus where the fetus develops over 9 months. |
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| The respiratory system brings air into the body and removes carbon dioxide. It includes the nose, trachea, and lungs. |
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| The skeletal system is made up of bones, ligaments, and tendons; it shapes the body and protects organs. The skeletal works with the muscular system to help the body move. |
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| The urinary system eliminates waste from the body in the form of urine. The kidneys remove waste from the blood. The waste combines with water to form urine. |
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