DaSzanice

=The Human Body has 206 bones !!=

All the bones of the human body have a special role. They all work together to keep the human body stable. When you are a baby you have 300 bones at birth, but when you grow they join together which will make 206 bones. The main bones are the spine, the ribs, skull, hand, legs, and your joints. To take care of your bones stay active and drink lots of calcium. Website Link

=Healthy Body=

A healthy body is determined by looking at comparison of height, weight, body fat ratio, fitness, diet and hydration. Its not determined by if you are fat or skinny because you can be fat and short and be healthier than a skinny tall person. Obesity on the other hand is unhealthy for the body. So stay in you BMI range, and make sure your body fat percentage stays in it correct range.

Website Link =Digestive System=

The digestive system is made of digestive tract which is hallow organs joined in a long, twisted tube from the mouth to the anus. The organs that make up the digestive tract is the mouth, esophagus, stomach, small intestine, and large intestine. The lining of the hallow organ is called mucosa. Mucosa produces juices to help digest food. The digestive system is controlled by hormones. The function of the digestive system is to break down the food and to provide your body with energy from the food it digestive. Website Link =Respiratory System=

The respiratory system main function is to supply blood with oxygen so the blood can deliver to other parts of the body. It happens through breathing. Respiration is achieved through the mouth, nose, trachea, lungs, and diaphragm. The diaphragm's job is to help pump the carbon dioxide out of the lungs and pull the oxygen into the lungs. The diaphragm is a sheet of muscles that lies across the bottom of the chest cavity.



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=Circulatory System=

The human body has an average of 5 liters of blood. The circulatory system is made up of vessels and muscle. The main parts of the circulatory system are the heart, arteries, capillaries, and vein.

How the blood circulates
CO₂ enters the superior vena cava ⇒goes through the right ventricle⇒to the lungs⇒ O₂ leaves the lungs⇒ to the left ventricle⇒ throughout the aorta ⇒to the body

Website Link =Nervous system=

The nervous system is very complex. It is divided into two main systems, the central nervous system (CNS) and the peripheral system. The spine and brain make up the CNS. The main job is to get the information from the body and send out instructions. The peripheral system is made up by all the nerves and the wiring. This system sends the messages from the brain to the rest of the body. The brain keeps the body, it helps keep the body and organ working the way they should. Website Link =Muscular System=

More than 650 individual muscles are attach to skeleton in the human body. The main body is the movement of the body. The muscular system has three type of muscle tissues. Cardiac muscle which is the muscle, the heart itself. The skeletal muscle which is makes up 40% of the human body weight. Smooth muscles are the internal organs such as urine bladder, gallbladder, arteries,and veins. =

Skeletal System =