Lymphatic System Flashcards
Name the Lymphatic Organs
Lymph Nodes, lymph vessels, thymus gland, spleen, tonsils, peyer’s patches
Lymph Nodes
600-700 in the body. Most are in the abdomen. “filtering stations,” produce WBC, regulate proteins in the lymph (recycling center) and helps move waste out (urine)
Lymph Vessels (capillaries, pre-collectors, collectors, trunks)
intrinsic contractions (6-10x per minute) smooth muscles. Devoted to the propulsion of lymph
thymus gland
produce t-cells (white cells). secretes thymopoietin
Capillaries in lymph vessels
where the lymph vessels intertwines with the blood vessels. They are larger and able to take up proteins. GETS DIFFUSION
Collectors
actually have contractility in the vessel. transports vessels to get fluid from one place to the other. Respond to stretch
pre collectors
Pre-collectors are vessels of the lymphatic system that are located in between the initial lymphatics and the collectors. Their function is to transport lymph, allow for absorption, and interconnect the initial lymphatics and the collectors.
Trunks
the biggest part of vessels then moves to the thoracic duct***
Mechanisms of transportation
intrinsic contraction, respiration, arterial/venous pulsation, skeletal movement, new lymph (creates pressure), exercise (muscle pumping, adds pressure)
R subclavian vein
where lymph fluid enters from the right lymphatic duct and goes into this
L subclavian vein
where the lymph fluid enters from the thoracic duct to go into the blood stream
watershed
pattern on the body with the direction of drainage. including valves
What does lymph fluid contain?
proteins (75-100g are transported by the lymph system per day)
water
cells (RBC, WBC, Lymphocytes)
waste products and other foreign substances
fat (intestinal lymph, chyle)
how much does the body move?
2-2.5 L of lymph/day
what changes the lymph system
PRESSURE (and moving through pressure gradients)
