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Unit 6
| Question | Answer |
|---|---|
| What is lymph? | Fluid in the lymphatic system that collects from interstitial spaces and to the blood; low in protein |
| What are the lymphatic vessels? | Vessels that transport the lymph |
| What is lymphatic tissue? | Composed of many cell types, ( lymphocytes and macrophages) |
| What are lymphatic organs? | Connective tissue capsules (nodes) |
| What is lymph and what is it carried in? | Colorless liquid that is low in protein and contains macrophages, lipids, hormones, bacteria, viruses, cancer cells. |
| What is fluid recovery in the lymphatic system? | Reabsorbs excess fluid back into the blood stream; failure of this can lead to edema |
| What is Immunity in the lymphatic system? | Pick up pathogens from interstitial spaces and filters them through lymph nodes |
| What is liquid absorption in the lymphatic system? | small intestine has specialized lymphatics that take up lipids; Lacteals absorb lipids that cannot be absorbed by the blood stream. |
| Where are the lymphatic capillaries found? | Intertwined with regular capillaries |
| What is the function of a Natural killer cell? | Attach and kill bacteria, transplanted tissue and ones own self defense against cancer cells, found in the blood |
| What is the function of a T lymphocyte? | Regulates activity; found in the lymph nodes |
| what is the function of a B lymphocyte? | Secretes antibodies, mature in bone marrow, some may become memory B cells |
| What is the function of Macrophages? | Presents antigens to T cells so immune response may be enacted |
| What is the function of Dendritic cells? | Eat foreign matter |
| What are the primary lymphatic organs and what do they do? | Primary lymphatic organs are the red bone marrow, and the thymus. B cells learn to recognize antigens in the Red bone marrow and T cells learn to recognize antigens in the thymus. |
| what are the four classes that t lymphocytes have? | Cytoxic T cells Helper T cells Regulatory T cells Memory T cells |
| What does a Cytoxic T cell do? | Attack and kill other cells |
| What does a Helper T cell do? | respond to antigens and ilicit a defense |
| What do Regulatory T cells do? | keep the system in check |
| What do memory T cells do? | Long lasting memory against antigens |
| What are the secondary lymphatic organs and what do they do? | Secondary lymphatic organs are the lymph nodes, tonsils, and the spleen. All cells in these organs are already trained for immunity |
| What is one function of the respiratory system?1 | Speech and vocalization |
| What is one function of the respiratory system? 2 | Gas exchange (O2, CO2, between air, blood) |
| What is one function of the respiratory system?3 | olfaction (smell |
| What is one function of the respiratory system?4 | Helps control PH |
| What is one function of the respiratory system?5 | Aids in regulation of blood pressure by assisting aniotensin ll production |
| What is one function of the respiratory system?6 | helps create pressure gradients for flow of lymph and venous blood |