Term
| One of the three functions of the lymphatic system |
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Definition
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Term
| One of the three functions of the lymphatic system |
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Definition
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Term
| One of the three functions of the lymphatic system |
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Definition
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Term
| The three functions of the lymphatic system |
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Definition
| Fluid recovery, immunity, lipid absorption |
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Term
| The first component of the lymphatic system |
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Definition
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Term
| The second component of the lymphatic system |
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Definition
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Term
| The third component of the lymphatic system |
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Definition
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Term
| The fourth component of the lymphatic system |
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Definition
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Term
| The purpose of lymphatic vessels |
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Definition
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Term
| What is lymphatic tissue composed of? |
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Definition
| Aggregates of lymphocytes and macrophages that populate many organs in the body |
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Term
| Lymphatic tissue is particularly concentrated where? |
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Definition
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Term
| Lymphatic organs are set apart from surrounding organs by what? |
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Definition
| Connective tissue capsules |
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Term
| Is lymph high or low in protein? |
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Definition
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Term
| What are the origins of lymph? |
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Definition
| It originates as tissue fluid that has been taken up by lymphatic vessels |
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Term
| Lymphatic vessels begin as what? |
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Definition
| Microscopic lymphatic capillaries (terminal lymphatics) |
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Term
| What four things do lymphatic vessels not penetrate in the body? |
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Definition
| CNS, cartilage, bone, bone marrow |
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Term
| Do lymphatic vessels have closed or open ends? |
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Definition
| Closed - unlike blood vessels |
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Term
| Lymphatic capillaries have a sac made of what? |
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Definition
| Thin endothelial cells that loosely overlap each other |
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Term
| Are there gaps between lymphatic endothelial cells, and why are they like this? |
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Definition
| Gaps - so large that bacteria, lymphocytes and other cells can enter |
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Term
| If tissue pressure is too high, do the flaps on lymphatic endothelial cells open or close? |
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Definition
| Flaps pushed inwards (open) - fluid flows into capillary |
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Term
| Tissue pressure is higher in lymphatic capillary than in tissue fluid, so the flaps on lymphatic endothelial cells open or close? |
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Definition
| Flaps pressed outward (closed) |
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Term
| Lymphatic vessels bud of what other anatomic structure in the embryo? |
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Definition
| Veins - hence similar histology |
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Term
| Are walls thinner in veins or lymphatic vessels? |
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Definition
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Term
| Are the valves closer together in veins or lymphatic vessels? |
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Definition
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Term
| Where does lymph flow after the lymphatic capillaries? |
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Definition
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Term
| Where does lymph flow after the collecting vessels? |
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Definition
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Term
| Where does lymph flow after the six lymphatic trunks? |
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Definition
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Term
| Where does lymph flow after the two collecting ducts? |
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Definition
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Term
| Lymphatic capillaries converge to form what? |
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Definition
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Term
| Lymphatic collecting vessels often flow along side what other anatomical structures? |
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Definition
| Veins and arteries - often share connective sheath with them |
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Term
| Where are the six lymphatic trunks? |
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Definition
| Jugular, subclavian, bronchomediastinal, intercostal, intestinal, lumbar |
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Term
| Which of the following is not one of the six lymphatic trunks: jugular, subclavian, atrial, bronchomediastinal, intercostal, intestinal, lumbar |
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Definition
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Term
| What are the names of the two collecting ducts of the lymphatic system? |
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Definition
Right lymphatic ducts
Thoracic duct |
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Term
| The rght lymphatic duct is a convergence of which lymphatic trunks? |
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Definition
| Right jugular, subclavian, and bronchomediastinal trunks in right thoracic cavity |
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Term
| The right lymphatic duct receives drainage from what areas of the body? |
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Definition
| Right arm and right side of thorax and head |
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Term
| The right lymphatic duct empties into where? |
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Definition
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Term
| Is the right lymphatic duct or the thoracic duct larger and longer? |
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Definition
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Term
| The thoracic duct begins just below what anatomical structure? |
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Definition
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Term
| The two lumbar trunks and intestinal trunk of the lymphatic system join to form what? |
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Definition
| Cisterna chyli - a prominent sac |
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Term
| As the thoracic duct passes through the thorax, is receives additional lymph from what lymphatic trunks? |
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Definition
| Left bronchomediastinal, left subclavian, and left jugular trunks |
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Term
| The thoracic duct empties into where? |
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Definition
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Term
| Collectively, the thoracic duct drains what areas of the body? |
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Definition
| All of the body below the diaphragm, and the left upper limb and left side of the head, neck, and thorax |
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Term
| Does lymph flow at a higher or lower pressure and speed than venous blood? |
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Definition
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Term
| What is the primary mechanism for the flow of lymph? |
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Definition
| Rhythmic contraction of lymphatic vessels themselves |
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Term
| Do lymphatic vessels have valves like veins? |
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Definition
| Yes - to prevent backflow |
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Term
| What other mechanism, besides rhythmic contraction of lymphatic vessels themselves, helps the flow of lymph? |
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Definition
| Muscular contraction, and arterial pulsation |
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Term
| How does the common sharing of a sheath between a lymphatic vessel and an artery help the flow of lymph? |
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Definition
| Arterial pulsation may also rhythmically squeeze lymph vessels and help flow |
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Term
| What pump promotes lymph flow from abdominal to the thoracic cavity as one inhales? |
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Definition
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Term
| What helps draw in the flow of lymph at point where collecting ducts empty into subclavian veins? |
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Definition
| Rapidly flowing bloodstream |
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