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Flashcards in Lymphatic System Deck (9)
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1

lymphatic system

consists of lymph, vessels, ducts, and accessory organs that contain lymphatic tissue

2

lymph

interstitial fluid that passes into lymphatic vessles and tissue
consists of a clear or slightly liquid portion, white blood cells (mainly lymphocytes) and a few red blood cells
flows in the lymphatic vessels, through the lymph ducts and nodes and is eventually added to the benous blood circulation

3

lymphatic vessels

begin as a network of blind tubules in the intercellular spaces start out as tiny lymphatic capillaries and then unite to form larger tubes
drains excess fluid from the tissue and will return the useful portions of the blood

4

lymph nodes

oval or bean shaped and are located along the lymphatic vessels
filter out and destroy foreign substances as lymph passes through them
scattered throughout the body both superficially and deep

5

lymphatic ducts

collect lymph from the different areas of the body
empty filtered lymph into both subclavian veins

6

red bone marrow

located in flat bones and the epephyses of long bones
produce lymphocytes that carry out immune repsponses

7

thymus gland

located in the mediastinum and is proportionately larger in an infant than in an adult
produces lymphocytes
thymus secretions direct the production of antibodies which fight infection and foreign proteins

8

spleen

the largest single mass of lymphatic tissue in the body
egg shapped organ located in the left hypochondriac region of the abdomen

9

lymphatic system function

drains excessive interstital fluid
transports diatary lipids
carries out immune responses