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Hole's Essentials of Human Anatomy and Phsyiology Ch. 14
n/a
22
Anatomy
12th Grade
02/10/2012

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Term
lymphatic system
Definition
network of vessels that transport body fluids and the cells and chemicals in those vessels and the organs and glands that produce them
Term
lymphatic vessels (3)
Definition
carry away excessive fluid from interstitial spaces; semilunar valves on teh inside; pass lymph nodes and merge to form lymphatic trunks
Term
lacteals
Definition
trasnport fat to the circulatory system
Term
lymphatic pathways
Definition
lymphatic capillaries that merge to form larger vessels the empty into the circulatory system
Term
lymphatic capillaries
Definition
tiny, closed ended tubes that extend into interstitial spaces
Term
lymph
Definition
tissue fluid
Term
lymphatic trunks
Definition
drain lymph from the body; and join collecting ducts
Term
lymphatic path
Definition
lymphatic vessels-->lymph nodes-->lymphatic trunk-->collecting ducts (thoracic or right lymphatic)-->left/right subclavian vein (respectively
Term
tissue fluid
Definition
water and dissolved substances that leave blood capillaries by filtration and diffusion
Term
osmotic pressure
Definition
increases in tissues when smaller proteisn leak from capillaries into tissues and not returned to bloodstream during filtration
Term
what propels lymph (2)
Definition
hydrostatic presure of tissue fluid drives lymph into lymphatic capillaries; forces that move blood in veins (skeletal muscle contraction, breathing movements, contraction of smooth muscles in the walls of the lymph trunk)propel lymph through lymphatic vessels
Term
edema
Definition
interferes with the flow of lymph; could happen during surgery when lymphatic vessels or tissues being removed
Term
lymph nodes
Definition
aggregated in chains along hte larger lymphatic vessels; filter potentially harmful particles from lymph; centers of production for lymphocytes
Term
thymus (3)
Definition
located in the interior to the aorta; divided into lobules; lymphocytes leave thymus and protect immunity
Term
spleen (4)
Definition
posterior lateral to stomach; splenic lobules are filled with blood; contains macrophages which filter blood
Term
mechinical barries (3)
Definition
innate defense such as skin, mucous and hair; tears, sweat etc. wash away
Term
cehmical barriers (2)
Definition
enzymes kill pathogens; interferons block proliferationa dn stifle tumor growth
Term
natural killer cells
Definition
secrete perforins that destroy cancer cells
Term
inflammtion
Definition
attracts white blood cells adn tissues form a sac to prevent spread of pathogens
Term
phagocytosis (3)
Definition
monocytes give rise to macrophages; line blood vessels
Term
fever
Definition
decrease blood-iron level and increase phagocytic activity
Term
antigens
Definition
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