Warm-Up: January 21, 2011

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Warm-Up: January 21, 2011. Which of these biomes is closest to the equator? Taiga Desert Savanna temperate deciduous forest. Activator. Has a doctor ever felt your neck or jaw when you were sick. What is the doctor checking for. EQ - How do the functions of organ systems interact?. TWL - PowerPoint PPT Presentation

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<p>Lymphatic System</p> <p>Warm-Up: January 21, 2011Which of these biomes is closest to the equator?TaigaDesertSavannatemperate deciduous forest</p> <p>ActivatorHas a doctor ever felt your neck or jaw when you were sick. What is the doctor checking for. EQ - How do the functions of organ systems interact?TWL</p> <p>Today I will learn about the lymphatic system because it helps your body fight pathogens.Integumentary SystemIntegumentary SystemIs made up of the skin, hair, and nails.</p> <p>Function: it protects your body and helps maintain homeostasis.</p> <p>SkinFour functionsKeeps water in the body and keeps foreign particles out of the body.Helps you touch the outside world with nerve endings in the skinHelps regulate body temperature through sweat glandsHelps get rid of waste</p> <p>Layers of SkinEpidermis: the outermost layer of the skin.Dermis: the thicker layer of skin that lines beneath the epidermis.Hair and NailsHair: helps protect the skin from ultraviolet light. It also helps keep particles out of your eyes and nose.Nails protect the tips of your fingers and toes.Skin InjuriesSkin cancer: can be caused by damage to the genetic material in skin cells.Skin may also be affected by hormones that cause oil glands to produce too much oil. The oil, dead skin cells, and bacteria can clog the hair follicles.Lymphatic System</p> <p>The lymphatic system is the group of vessels, organs, and tissues that collects excess fluid and returns it to the blood. The lymphatic system also helps your body fight pathogens.</p> <p>LYMPH CAPILLARIES</p> <p>Lymph capillaries absorb some of the fluid and particles from between cells in the body.The fluid and particles absorbed into lymph capillaries are called lymph</p> <p>LYMPHATIC VESSELS</p> <p>Lymphatic vessels drain the lymph into large veins in the neck. This returns the fluid to the cardiovascular system.</p> <p>BONE MARROW</p> <p>Bone marrow is the soft tissue inside bones that makes red and white blood cells. White blood cells called lymphocytes help fight infection. </p> <p>LYMPH NODES</p> <p>Lymph nodes are small masses of tissue that remove pathogens and dead cells from the lymph.</p> <p>THYMUS</p> <p>Thymus is a gland that produces T cells that are ready to fight infection.</p> <p>SPLEEN</p> <p>The spleen may release lymphocytes into the bloodstream when there is an infection. The spleen also monitors, stores, and destroys old blood cells</p> <p>TONSILSThe tonsils are lymphatic tissue at the back of the mouth. Tonsils help defend the body against infection by trapping pathogens</p>

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