2. You Have to Have a System The human body is like a complex organization that has an important job to get done on a tight deadline. In order to get everything done perfectly and on time, it has to use a system. Actually, the human body uses many systems that work side by side.

4. On average, your body has about 5 liters of blood continually traveling through it by way of the circulatory system. The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system. The pumping of the heart forces the blood on its journey.blood vessels

6. The primary function of the Respiratory system is to supply the blood with oxygen in order for the blood to deliver oxygen to all parts of the body. The Respiratory system does this through breathing. When we breathe, we inhale oxygen and exhale carbon dioxide. This exchange of gases is the Respiratory system's means of getting oxygen to the blood.

8. Organs that make up the Digestive tract are the mouth, esophagus, stomach, small intestine, large intestine also called the colon rectum, and anus

9. How is food digested? Digestion involves mixing food with digestive juices, moving it through the digestive tract, and breaking down large molecules of food into smaller molecules. Digestion begins in the mouth, when you chew and swallow, and is completed in the small intestine.

10. Carbohydrates. The Dietary Guidelines for Americans 2005 recommend that 45 to 65 percent of total daily calories be from carbohydrates. Foods rich in carbohydrates include bread, potatoes, dried peas and beans, rice, pasta, fruits, and vegetables. Many of these foods contain both starch and fiber.

12. The nervous system is a network of specialized cells that communicate information about an organism's surroundings and itself.network organism's

14. The Skeletal System The Skeletal System serves many important functions; it provides the shape and form for our bodies in addition to supporting, protecting, allowing bodily movement, producing blood for the body, and storing minerals.

16. The human body contains more than 650 individual muscles which are attached to the skeleton, which provides the pulling power for us to move around. The main job of the muscular system is to provide movement for the body. The muscular system consist of three different types of muscle tissues : skeletal, cardiac, smooth. Each of these different tissues has the ability to contract, which then allows body movements and functions. There are two types of muscles in the system and they are the involuntary muscles, and the voluntary muscles. The muscle in which we are allow to control by ourselves are called the voluntary muscles and the ones we can? control are the involuntary muscles. The heart, or the cardiac muscle, is an example of involuntary muscle.

17. What is Disease?

18. Disease is a state of discomfort in which the normal functioning of the body is disturbed.

19. Communicable and Non-Communicable Diseases Communicable diseases are also known as infectious diseases. They spread from one person to another, that is, a healthy person may catch it from a patient.

20. FOUND FROM – AMAZING BOOK OF QUESTION & ANSWER FOUND FROM – INTERNET