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Lymphatic part 1
| Question | Answer |
|---|---|
| What is the lymphatic system composed of? | Tonsils Spleen Thymus Vessels Cell (provide immunity) Many glands/nodes |
| Interstitial Fluid | Fluid that is found in between cells (very similar in make up of plasma) |
| What are lymph nodes? | Small glandular structures connected by a network of lymphatic vessels |
| What do lymph nodes do? | -Major site for B & T-cell lymphocytes -Filtration system for lymphatic fluid |
| What are the steps of lymphatic fluid filtration? | -Plasma leaks out of blood capillaries (most gets drown back in) but some is picked up by lymphatic vessels -The now lymph fluid flow through bigger lymphatic vessels and into nodes -Exits through duct back INTO the circulatory systm. |
| Why is important that our bodies reroute this fluid through the lymphatic system? | The lymphatic system, nodes, and glands allows the body to get a better check for pathogens |
| What is the flow in lymphatic vessels? | -No pump (like blood) so relies on gravity and muscle movement that force a passive flow -Has unidirectional valves (like veins) to keep moving in one direction -Ultimately finds its way back to circulating blood of ducts (lymphatic & thoracic) |
| What are the 5 main lymph nodes? | Submandibular Inguinal Prescapular Popliteal Axillary |
| Which 3 lymph nodes should ALWAYS be palpated on physical exam? | Prescapular Submandibular Popliteal |
| Define lymphadenopathy | Swelling of the lymph nodes |
| Which two lymph nodes should be attempted to plapate but may only be felt if lymphadenopathy is present? | Axillary Inguinal |
| What are tonsils made out of and why are they important? | -Made up of lymphoid tissue -They are the first line of immunity in the throat |
| Tonsillitis | Disease of tonsils |
| Tonsillectomy | Removal of the tonsils |
| Where is the spleen located? | Left craniodorsal abdominal cavity |
| What is the spleen important for? | -Filtration of blood -Contains many macrophages that repair and remove damaged RBCs and remove pathogenic organisms from the blood -Also a storage for RBCs (ex. If hemorrhaging can release more) |
| Define splenomegaly | Enlargement of spleen |
| Why is injury to the spleen very dangerous? | The spleen is a highly vascular organ (lots of blood flow) so id damaged there is great potential for large amounts of blood loss |
| Slenectomy | Removal of spleen |
| What is the thymus? | It is a glandular lymphoid organ located in the mediastinum in of the thoracic cavity |
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