Essay On Lymphatic System

The diagram to the left shows the Lymphatic system which is a system of connections between organs and tissues. This network aids in the removal of waste and unwanted products from the body. The lymphatic system’s most important function is to transport white blood cells that fight infection called lymph though the body. These white blood cells contain antibodies which are built to detect, destroy and build immunity towards pathogens and infections that enter the body. The lymphatic system consists of lymphatic vessels, lymphatic organs and lymph.
Lymphatic Vessels
Lymphatic vessels are tubes with thick walls that carry fluids within the body away from the tissue. These vessels are much like veins but the difference is lymphatic vessels do not carry blood. Lymphatic vessels carry a fluid called lymph which is a clear liquid that comes from blood vessels. This liquid helps fight off infections in the body. The Lymphatic vessels act as a filter and clean the lymph fluid before allowing it to enter blood vessels near the heart. This process allows regulation of blood pressure and volume as the lymph re-enters the blood through the heart. The lymph travelling to the heart prevents a build up of lymph around the tissue causing edema which is swelling.
Just like veins, lymphatic
Both lobes of the thymus consist of many smaller sections called lobules. The lobules consist of and inner and outer layer. The inner layer is called the medulla and this is made of mainly T- cells and epithelial cells. The outer layer is called the cortex and this is again made of T-cells but these cells are developing which means the T-cells mature and once matured, they clone themselves producing specialised T-cells. The maturation and development of all the T-cells happens within the medulla. The diagram above shows the structure and position of the