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Mod 2B A&P Ch. 15
The Lymphatic System and Immunity
| Question | Answer |
|---|---|
| Lymph | A fluid formed in the tissue spaces that is transported and re-enters the circulatory system. |
| Lymphatic vessels | Vessels that carry lympth to to its return to the circulatory system. |
| Interstitial Fluid (IF) | Fluid located in the spaces between the cells |
| Right Lymphatic Duct | Drains lymph from the right upper extremity and right side of head, neck and upper torso. |
| Thoracic Duct | Largest lympth vessel; drains lymph from about 3/4ths of the body. |
| Cisterna Chyli | Pouch-like structure that serves as a storage area for lymph moving toward its point of entry into the venous system. |
| Lymphedema | Abnormal tissue swelling condition. |
| Lymphangitis | Inflammation of the lymphatic vessel. |
| Lymph Nodes | Filter lymph and are located in clusters along the pathway of lymphatic vessels. |
| Lymphoid Tissue | A mass of developing lymphocytes and related cells. |
| Lacteals | Lymphatic capillaries in the wall of the small intestine that transport fats obtained from food to the bloodstream. |
| Afferent Lymphatic Vessel | Deliver lymph to the node. |
| Efferent Lymphatic Vessel | Where lymph exits the node. |
| Lymphadenitis | Swelling and tenderness of the lymph nodes. |
| Metastasis | Spread of cancer |
| Lymphoma | Malignant tumor of lymph nodes |
| Two principal categories of lymphoma | Hodgkin Disease and Non-Hodgkin Lymphoma |
| Thymus | Small lymphoid tissue organ located in the mediastinum, extending upward in the midline of the neck. |
| Thymus Function | Produce T-cells, secretes hormone thymosin. |
| T-Cells | A lymphocyte; WBC; attach onto specific antigens to promote immunity. |
| Thymosin | a hormone; vital to the development and functioning of the immune system. |
| Tonsils | Masses of lymphoid tissue |
| Palatine Tnosils | Located on each side of the throat. |
| Pharyngeal Tonsils | Adenoids; located on the posterior side of the nasal cavity. |
| Lingual Tonsils | Near the base of the tongue |
| Tonsilitis | Inflammation/infection of the tonsils. |
| Spleen | Largest lymphoid organ in the body; has a very rich blood supply. |
| Splenectomy | Surgical removal of the spleen. |
| Splenomegaly | Abnormal spleen enlargement. |
| Immune System | The body's overall defense system. |
| Nonspecific Immunity | Innate Immunity, native or genetic immunity; not specific; rapid speed of reaction; no memory; phagocyte cells; chemicals include complement proteins, interferons |
| Inflammatory Response | Nonspecific immune process produced in response to injury and resulting in redness, pain, heat and swelling' promotes movement of white blood cells to the affected area. |
| Specific Immunity | Adaptive immunity, Acquired immunity; recognizes certain antigens; slower speed of reaction; has memory-enhanced response to repeated exposure; Lymphocytes cells; chemicals include antibodies, various signaling chemicals. |
| Specific Natural Immunity | Exposure to the causative agent is not deliberate |
| Natural Active Exposure (Specific) | A child develops a disease such as measles and acquires an immunity to a subsequent infection. |
| Natural Passive Exposure (Specific) | A fetus receives protection from the mother through the placenta or infant from mother's milk. |
| Specific Artificial Immunity | Exposure to the causative agent is deliberate. |
| Artificial Active Exposure (Specific) | Intentional exposure to the causative agent, such as a vaccination. |
| Artificial Passive Exposure (Specific) | Injection of protected material (antibodies) that was developed by another individual's immune system. |
Created by:
ROSSMIBOA
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