Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
lymphatic 15.5
lymphatic system
| Question | Answer |
|---|---|
| Lymphatic system has three components: | lymphatic capillaries and vessles,immune cellshymph |
| lymphatic capillaries | closed-ended tubes nestled among blood capillary networks. |
| immune cells | a group of tissues and organs |
| lymph | a clear colorless fluid similar to blood plasma but whoses composition varies from place to place in the body. |
| the lymphatic system has three functions1. absorbs what? | Absorb excess interstitial fluid and return it to the blood stream. |
| the lymphatic system has three functions2. removes what? | remove foreign chemicals, cells, and debris from the tissue |
| the lymphatic system has three functions3. Absorbs what? | absorb dietary lipids from the small intestine |
| lymphatic capillaries converge to form what? | larger lymphatic collecting vessels. |
| Collecting vessels enter into the part of the lymphatic network by | lymph nodes |
| a lymph nodes function is to | filter impurities from the lymph and alert immune system to the presence of pathogens. |
| right lymphatic duct | receives lymph from the right arm, right side of the thorax, right side of the head and drains into the right subclavian vein |
| right lymphatic duct drains into | right subclavian vein |
| thoracic duct | the largest lymphstic vessel, receives lymph from both sides of the body below the diaphragm from the left arm, left side of the head and left thorax |
| thoracic duct empties into | left subclavian vein |
| lymphatic follicles | constant features in lymph odes, the tonsils, and the ileum. |
| T lymphocytes (T cells) | T stands for thymus, where they mature |
| Cytotoxic | killer T cell destory target cells. Their cell m embrane holds a coreceptor that can recognize a specif antigen. |
| CD | cluster domain followed by a number for the cells |
| Helper T cells | contain CD4 coreceptor and are called T4 cells. Begin the defensive response against a specific antigen. |
| Memory T cells | arise from cytotoxic T lymphocytes that have prevously destroyed a foreign cell. |
| Suppressor T cells | suppress activation of the immune system. Failure may result in autoimmune diseases |
| B lymphocytes (B cells) | cells mature in bone marrow |
| B cells activated by helper T cells produce | antibodies |
| immunoglobulins, IG | antibodies |
| activated B cells are called | plasma cells |
| plasma cells | secrete large quantities of antibodies that immobilize, neutralize, and prepare the specfic antigen for destruction. |
| Null cells | are large granular lymphocytes that are natural killer cells but lasck the specific surface markers of the T and B lymphocytes |
| Macrophages develop from monocytes that have igrated from blood. | They ingest and destroy debris, bacteria, and other foreign matter (phagocytosis) |
| Phagocytosis | process of ingestion and destruction |
| spleen | highly vascular and spongy organ, larges lymphatic organ |
| spleen is located where? | left upper quadrant of the abdomen below the diaphragm and lateral to the kidney |
| spleen contains 2 types of tissue | white pulp and red pulp |
| white pulp | a part of the immune system that produces T cells, B cells and macrophages |
| red pulp | acts as a reservior for erthrocyctes, platelets, and macrophages that remove old and defective erythrocytes |
| functions of the spleen | phagocytize bacteria, initiate an immune response, phagocytize old, defective erythrocytes, serve as a reservoir |
| tonsils | 2 masses of lymphatic tissue located ast he entrance to the oropharynx |
| adenoids | single mass of lymphoid tissue in the midline at the back of the throat |
| thymus gland | has both endocrine and lymphatic functions |
| The largest gland is | the spleen |
| cervical nodes are accessible where | the neck |
| the axillary nodes are accessible where | axilla |
| inguinal nodes are accessible where | groin |
| lymphadenitis | infections in the lymph nodes causeing them to be swollen and tendor to touch |
| lymphadenopathy | enlarged lymp nodes |
| lymphadenopathy | lymph nodes have been removed |
| lymphoma | malignant neoplasm of the lymphatic organs |
| hodgkin lymphoma | characterized by the presence of abnormal cancerous B cells called Reed-Sternberg cells |
| Reed-Sternberg cells | large cells with two nuclei resembling the eyes of an owl |
| lymphangiogram | radiographic images of lymph vessels and nodes following injection of contrast material |
| non-Hodgkin lymphomas | occur much more frequently that Hodgkin lymphoma |
| tonsillitis | inflammation of the tonsils and adenoids |
| splenomegaly | enlarged spleen, is not a disease in itself, but result of underlying disorder. |
| hyperspelnism | condition in which the spleen removes blood components at an excessive rate |
| ruptured spleen | common complication from car accidents or other truma when the ebdomen and rib cage are damaged. |
| lymphedema | localized, nonpitting fluid retention caused by a compromised lymphatic system. |
Created by:
jsymons
Popular Medical sets