Anatomy---Lymphatic System

Front 1

lymphatic system

Back 1

one way drainage system that collects excessive tissue fluid and transports lymph to CV system, also transports chyle, produces lymphocytes, and the lymphatic tissues and organ help from immune system

Front 2

chyle

Back 2

fat laden lymph from lacteals in digestive tract transported by lymph system to CV system, white due to absorption of lipids

Front 3

site of lymphocyte production

Back 3

in nodes and in thymus

Front 4

lymph

Back 4

fluid formed from the filtration of blood plasma that leaks out of capillaries and fluid in tissues from cells

Front 5

lymph vessels

Back 5

lymph capillaries, lymphatic/collecting vessels, lymphatic ducts, lymph nodes

Front 6

lymph capillaries

Back 6

microscopic endothelial tubes that begin blindly in tissue spaces and end in larger vessels

Front 7

lacteals

Back 7

lymph capillaries in villi of small intestine

Front 8

lymphatic/collecting vessels

Back 8

like veins but with thinner walls, more valves, and lymph nodes at intervals

Front 9

lymphatic ducts

Back 9

2 in #, thoracic duct and right lymphatic duct

Front 10

thoracic duct

Back 10

left lymph. duct, larger 18 inches, begins as dilation near 2nd lumbar vertebra, drains all parts of body except those located on Right side of body above diaphragm, enters CV at junction, valves prevent backflow of blood into duct

Front 11

junction where thoracic duct enters CV system

Back 11

junction of left internal jugular and subclavian veins

Front 12

cisterna chyli

Back 12

like a juicebox, the dialtion of the thoracic duct near the 2nd lumbar vertebra

Front 13

right lymphatic duct

Back 13

shorter, about 1/2 inch long, drains upper R side of body, empties at junction of R internal jugular and subclavian veins

Front 14

lymph nodes

Back 14

small bean shaped, afferent and efferent vessels, capsular extensions, 2 major parts, 3 major functions

Front 15

trabeculae

Back 15

capsular extensions of lymph nodes

Front 16

afferent vessels of lymph nodes

Back 16

vessels that enter into the LN

Front 17

efferent vessels of lymph nodes

Back 17

vessels that exit out of the LN

Front 18

2 parts of lymph nodes

Back 18

cortex with cortical sinuses and medulla with medullary sinuses

Front 19

3 major functions of lymph nodes

Back 19

produce lymphocytes from germinal centers of cortical nodules and medullary cords, produce plasma cells, filter pathogens and foregin particales

Front 20

regulation of lymph flow

Back 20

continuous production of new lymph, peristalsis of lymphatic vessels, squeezing action of skeletal muscles (valves prevent backflow, edema results if flow slowed or blocked)

Front 21

lymphoid tissues

Back 21

form waldyer's ring in pharynx, palatine tonsils, pharyngeal tonsils adenoid, lingual tonsils

Front 22

lymph tissues composed of...

Back 22

lymphatic nodules like Peyer's patches in ileum

Front 23

GALT

Back 23

gut associated lymphatic tissue

Front 24

spleen

Back 24

10% with o.5" in diam of accessory spleens, stores RBCs release during function, produce RBC's before birth, produce B cells which become plasma cells then antibodies, macrophages therein filter blood by phagocytosis, destroys worn out RBC's, w/ release of hemoglobin, white and red pulp

Front 25

white pulp

Back 25

lymphatic tissue + splenic nodules around arteries

Front 26

red pulp

Back 26

splenic cords associated with veins (sinusoids)

Front 27

thymus gland

Back 27

in superior mediastinum, key role in immune development, large in children

Front 28

thymus role in Immune development

Back 28

helps produce t-cells that directly or indirectly destroy invading microbes(cell mediated immunity)

Front 29

thymus in children

Back 29

large in children, maximum size reached during puberty, slowly grows to fat and connective tissue

Front 30

involution

Back 30

atrophy of thymus to fat and CT