The Skeleton
Our skeleton consists of 206 bones. However, when we were an infant you had as many as 350 as some of the bones fuse together as you grow. More than half of your 206 is found in the hands and feet. The largest bone in your body is the femur (thigh bone). The femur connects to the tibia and fibula (shin bones). Our humerus (funny bone) connects the radius and ulna (forearm bone). Our shoulder blade is called the scapula and our collar bone is known as the clavicle. Our cranium is known as the skull. Our fingers and toes are called phalanges. The mandible (jaw). The smallest is found in the ear and called the hammer, anvil, and stirrup.
The joints
Function
-Cartilage-reduces friction and acts as a shock absorber.
-Synovial fluid-Keeps the cartilage slippery and lubricated.
-Synovial membrane-Produced synovial fluid and hold it in place.
-Ligament- Hold bones together and stop them coming apart.
The muscle
The muscle a band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body. Muscle is attached to bones by strong tendons. When a muscle contract, it pulls on the bone, and the bone can move if it is part of a joint. Triceps are the back of the upper arm. Biceps are the front of the upper arm. Hamstring muscle at the back of the upper leg. Quadriceps muscle at the front of upper leg. Gastronomic calf muscle back of the lower leg. Tibialis Anterior muscle at the front of the lower leg.
The Blood
The Blood is made up of four main components-plasma, red blood cells, white blood cell, and platelets. Plasma carrying carbon dioxide to your lungs. The white blood cell fights infection and disease. Platelets are tiny fragments of cells. They are responsible for making blood clot when you get a cut in your skin. Red blood cells contain a chemical that carries oxygen around your blood cells make up about 45% of the blood. The chemical messenger is called the hormones.
