Lymphedema Exam Questions With 100% Correct Answers

Lymphedema Exam Questions With 100% Correct Answers Describe how the lymphatic system works with the circulatory system - answerThe lymphatic system isn't directly connected to the circulatory system but does follow similar pathways and works in conjunction with the venous system [Lymph vessels take the 10-20% of fluid that veins cannot pick up back into the veins. 2. List the lymph organs/ elements of the lymphatic system. - answerLymph nodes, spleen, tonsils, thymus, bone marrow 3. What are lymphoid cells and where are they produced? - answerLymphoid cells are lymphocytes (B and T cells) produces in the bone marrow and macrophages 4. Explain the role and function of the lymphatic system. - answerLymphatic system maintains fluid volume by balancing fluid entering and leaving interstitial spaces ------ AND ----- - transports proteins back to our circulating blood -----AND ----- produces lymphocytes to remove waste material from the interstitium that cant go through the venous system 5. Describe the composition of lymphatic fluid and relate this to the body's ability to maintain an appropriate fluid balance between the vessels and the interstitium. Relate this to Starling's Law of Equilibrium. - answerLymphatic fluid consists of water, proteins, cellular components, particles, and fatty acids. ---- ~10-20% of water leaving blood capillary system comprises the lymphatic load (LL). [2-4L/day] ---------------------------------------------------------------------- starlings law: oncotic and hydrostatic pressure bull doodoo 6. What is the function of the lymphatic capillaries and where are they located? - answerLymphatic capillaries are just beneath the epidermis (1mm deep) ---Cover the entire body surface ---- function in picking up lymphatic load for lymph formation. 7. Describe the structure of the lymph capillaries and relate this to fluid movement within the lymph system. - answerThe lymph capillaries are single, overlapping layers of endothelial cells. Inlet valves allow the inner cell to open ONLY towards the inside. movement (muscle contraction, respiration, etc) pushes lymph from blood vessels into adjacent capillary mesh (no valve here) - lymphatic fluid moves down a resistance gradient. 8. Compare and contrast pre-collect and collector vessels within the lymph system. - answerPre-Collectors: Connect superficial capillaries to superficial collector vessel - may contain valves ------------------------------------------------------------------Collector Vessels: resemble "pearl necklace" - transports lymph fluid to lymph nodes and trunk - have well developed valves and lined with smooth muscle