SOLUTIONS GRADED A+
✔✔PRE-COLLECTORS - ✔✔-FOUND in- superficial portions of the dermis & end at the
collectors in the subcutaneous tissue
-CONNECT initial lymphatics to collectors
-Has some smooth muscle and some valves
-Has some open junctions
✔✔COLLECTORS - ✔✔Bring lymph to Lnn and trunks
HAVE DEVELOPED VALVES
Run parallel and bring lymph fluid distal to proximal
Deep collectors draining the deeper tissues & organs
Superficial collectors drain the skin or superficial tissue
3 LAYERS
Intima- endothelial cells and a basal membrane.
Media- Smooth muscle cells and elastic fibers.
Adventia- Collagen fibers and other cells (macrophages, neurons, and dendritic cells)
Have open junctions in wall of the collectors allowing for a minimal amount of solutes to
escape,
like proteins.
✔✔Lymphatic Trunks - ✔✔Drain into larger vessels located in deep fascia and or
organs
Has valves and structure like collectors but with thicker media layer
6 main ones- gastrointestinal, lumbar, parasternal, supraclavicular, subclavian, and
jugular
Main two-thoracic and right lymphatic duct
✔✔Lymph Nodes - ✔✔FILTER the lymphatic fluid and activation, differentiating, and
proliferating lymphocytes.
THICKEN Lymph fluid
Has more afferent collectors coming in than efferent coming out of hilus.
-The afferent vessels can carry lymph from distinct tissues, or they can carry lymph
directly from a previous node to continue to propel the lymph up the chain of drainage.
, 600-700 in body, don't regenerate.
The surrounding capsule is fibrous with trabeculae dividing the node into interconnected
sections containing both a cortex & medulla.
Each node has one artery entering at the hilum to supply the node with nutrients and
one vein leaving the node at the hilum.
-Carry B and T lymphocytes
-LYMPH FLUIDS ENTERS LYMPH NODES VIA AFFERENT LYMPH COLLECTORS
WHICH PERFORATE CAPSULAR AREA
-LYMPH FLUID LEAVES THE NODES VIA EFFERENT LYMPH COLLECTORS AT
THE HILUS AREA
-Function to PROTECT- from harmful material,
-IMMUNE- produce antigen stimulated lymphocytes -white blood cells (MORE
LYMPHOCYTES IN EFFERENT VESSELS),
-THICKENS lymph fluid (blood capillaries inside lymph nodes reabsorb a large portion
of water content in lymph fluid which reduces amount of lymph va thoracic duct and
right lymphatic duct in venous system).
Most are in neck, digestive system (where most pathogens come into the body).
✔✔MLD direction - ✔✔Proximal to distal
Direction is towards pertinent lymph node.
Has a working and a resting phase.
✔✔Edema - ✔✔Side effect from condition
Dynamic Insufficiency
High Volume Insufficiency
increased lymphatic load - on a
healthy lymphatic system
✔✔mechanical insufficiency - ✔✔TC reduced
more fluid, or LL than the TC can accommodate.