lymphatic system
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27 terms
Terms | Definitions |
|---|---|
 lymphatic pathways bein as__that merge to form lymphatic vessels | lymphatic capillaries |
| The wall of a lymphatic capillary consists of a single layer of what? | squamous epithelium |
| Once tissue intersititual fluid is inside a lymph capillary, the fluid is called | lymph |
| Lymphatic vesels have walls similar to those of what? | veins |
| Lymphatic vessels contain something that help prevent the backflow of lymph, what is it? | valves |
| lymphatic vessels usually lead to what? that filer the fluid being transported | lymph nodes |
| the lymphatic trunk drains the head and neck is called the | jugular trunk |
| what is the larger and longer of the two lymphatic collecting ducts? | the thoracic trunk and the left lymphatic duct |
| Lymph nodes contain large numbers of white blood cells called | lymphocytes |
| The indented region where blood vessels and nerves join a lymph node is called the | hilum |
| the spaces within a lymoh node are called___through which lymph circulates | lymph sinuses |
| lymph enters a node through what? | an afferent lymphatic vessel. |
| the partially encapsulatd lymph node in the pharynx is called | tonsil |
| the aggregations of lymph nodules found within the mucosal lining o the small intestine are called | peyers patches |
| the lymph nodes in the cervical region are associated with the lymphatic vessels that drain what? | scalp face nasal pharynx |
| the lymph nodes associated with the lymphatic vessels which draink the lower limbs are located in what region? | inguinal region |
| the thymus is located in where? | mediastinum |
| the thymus reaches its greatest size during infancy and early childhood and tends to decrease in size following | puberty |
| as a person ages, the thymus tissue is often replaced by | adipose and other connective tissues |
| the lymphocytes of the thymus develop from precursor cells that originated in the | bone marrow |
| the hormones secreted by the thymus are called | thymosins |
| what is the largest organs of the lymphatic system | spleen |
| blood vessels enter the spleen through the region called the | hium |
| the sinuses within the spleen contain what? | blood |
| the tiny islands of t issue within the spleen that contain many lymphocytes comprise which kind of pulp | white pulp |
| which pulp of the spleen contains large numbers of red blood cells, lymphocytes, and macrophages | red pulp |
| what within the spleen engulfs and destroys foreign particles and cellular debris | macrophages |
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