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The Lymphatic System   Presentation 2  Chapt. 6&7

The Lymphatic System Presentation 2 Chapt. 6&7






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    The Lymphatic System   Presentation 2  Chapt. 6&7 The Lymphatic System Presentation 2 Chapt. 6&7 Presentation Transcript

    • What is the Lymphatic System ?
      • The Lymphatic system consists of organs, ducts, and nodes. It transports a watery clear fluid called lymph.  This fluid distributes immune cells and other factors throughout the body. It also interacts with the blood circulatory system to drain fluid from cells and tissues. The lymphatic system contains immune cells called lymphocytes , which protect the body against antigens (viruses, bacteria, etc.) that invade the body. 
      • Network:
        • Lymph Vessels
        • Lymph Nodes
        • Thymus Gland
        • Spleen
        • Tonsils
    • Lymph Vessels
      • Lymph vessels act as a reservoir from plasma and other substances including cells that leaked from the vascular system and transport lymph fluid back from the tissues to the circulatory system. Without functioning lymph vessels, lymph cannot be effectively drained and edema typically results.
      Network and Functions of the Lymphatic System:
    • Lymph Nodes
      • A Lymph node is an organ consisting of many types of cells, and is a part of the lymphatic system. Lymph nodes are found all through the body, and act as filters or traps for foreign particles. They contain white blood cells. Thus they are important in the proper functioning of the immune system.
      • Lymph nodes also have clinical significance. They become inflamed or enlarged in various conditions, which may range from trivial, such as a throat infection, to life-threatening such as cancers. In the latter, the condition of lymph nodes is so significant that it is used for cancer staging, which decides the treatment to be employed, and for determining the prognosis.
      Network and Functions of the Lymphatic System: http://www.righthealth.com
      • The thymus is a ductless gland located in the upper anterior portion of the chest cavity. It is most active during puberty, after which it shrinks in size and activity in most individuals and is replaced with fat. The thymus plays an important role in the development of the immune system in early life, and its cells form a part of the body's normal immune system.
      • The immune system is a complex network of cells, proteins, tissues, and organs that work together to fight off harmful substances.
      • http://www.righthealth.com
      • en.wikipedia.org/wiki/Thymus_gland 
      Network and Functions of the Lymphatic System: Thymus Gland
      • The spleen, a spongy, soft organ about as big as a
      • person's fist, is located in the upper left part of the abdomen, just under the rib cage. The splenic artery brings blood to the spleen from the heart. Blood leaves the spleen through the splenic vein, which drains into a larger vein (the portal vein) that carries the blood to the liver. The spleen has a covering of fibrous tissue (the splenic capsule) that supports its blood vessels and lymphatic vessels.
      • The spleen is made up of two basic types of tissue: the white pulp and the red pulp, each with different functions. The white pulp is part of the infection-fighting (immune) system. It produces white blood cells called lymphocytes, which in turn produce antibodies (specialized proteins that protect against invasion by foreign substances). The red pulp filters the blood, removing unwanted material. The red pulp contains other white blood cells called phagocytes that ingest microorganisms, such as bacteria, fungi, and viruses. It also monitors red blood cells, destroying those that are abnormal or too old or damaged to function properly.
      Network and Functions of the Lymphatic System: SPLEEN http://www.merck.com
    • Network and Functions of the Lymphatic System:
      • The tonsils are areas of lymphoid tissue on either side of the throat . An infection of the tonsils is called tonsillitis . Most commonly, the term "tonsils" refers to the palatine tonsils that can be seen in the back of the throat.
      • Like other organs of the lymphatic system , the tonsils act as part of the immune system to help protect against infection. In particular, they are believed to be involved in helping fight off pharyngeal and upper respiratory tract infections .
      Tonsils http://en.wikipedia.org
    • Crossword
      • Across: 1 . ....... Substance capable of inducing formation of antibody
      • Down: 2 . Network of cells working together to fight off harmful substances
      • Across: 3. Made of white and red pulp.
      • Down: 4: Purify excess tissue fluids and transports back to circulatory system
      • Across: 5. basic unit of all living things
      • Down: 6 Help fight infection in the throat and Upper Respiratory System
      • Down :7 Abbreviation also known as Erythrocytes
      • Across 8 . Vital role in the development of the Immune System
      • Down: 9 Filters bacteria and foreign organisms from the body fluids.
      • Across 10 . Abbreviation for blood cells that protect against invasion of bacteria and foreign material
      • Across: 11 A colorless fluid
      • Down: 12 Group of Tissues
      An Word Choice : Lymph Vessels, Antigen, Lymph, RBC, Immune System, Thymus, Tonsils, WBC, Organs, Lymph Node, Cell, Spleen 12 5 8 11 2 9 3 4 10 7 6 1
    • Crossword – Answers A cross: 1.Antigen 3. Spleen 5. Cell 8. Thymus 10. WBC 11. Lymph 12. Organs Down: 2. Immune System 4. Lymph Vessel 6. Tonsils 7. RBC 9. Lymph Node