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25 Cards in this Set

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  • Back
immune system
~specialized cells/structures that defend against invasion by harmful organisms/chemical toxins
~lymph nodes, thymus, spleen, tonsils
hematologic system
~blood delivers O2/nutrients to all tissues/removes wastes
~blood, bone marrow
lymphatic vessels
~capillary-like structures that are permeable to large molecules
~prev edema by moving fluids/proteins 4m interstitial spaces to venous circulation
~reabsorb fats 4m small intestine
lymph nodes
~tissues that filter out bacteria and other foreign cells
lymph
~fluid found in interstitial spaces
~water and end prod of cell metabolism
tonsils
~back of the mouth in oropharynx
~fight off pathogens entering mouth/nose
~made of lymphatic tissue and produce lymphocytes
spleen
~destroys bacteria
~filters blood
~blood reservoir
~forms lymphocytes and monocytes
~traps formed particles
red bone marrow
~source of lymphocytes/macrophages
hematopoiesis
~process which erythrocytes, leukocytes, thrombocytes are produced
yellow bone marrow
~red bone marrow that has changed to fat
stem cells
~may evolve in2 lymphocytes -> B cells or T cells
~may evolve in2 phagocytes
erythrocytes
~RBCs
~formed in bone marrow
~contain hemoglobin
~O2 binds w/HGB to form oxyhemoglobin, which is carried by RBCs throughout the body
thrombocytes
~platelets
~formed in bone marrow
~function in coag of blood
leukocytes
~WBCs
~formed in bone marrow/lymphatic tissue
~provide immunity and protection 4m infec by phagocytosis
phagocytosis
~engulfing, digesting, destroying microorganisms
plasma
~liquid portion of blood, H2O, protein, glucose, electrolytes
P.L.A.T.E.
~Plasma
~Leukocytes
~AB antigens
~Thrombocytes
~Erythrocytes
blood types
~A antigen
~B antigen
~AB antigen
~O (no antigens)
O blood type
~lacks both A & B antigens, it can be transfused in limited amts in an emergency to any pt
~universal donors
AB blood type
~has neither anti-A, anti-B, or O
~universal recipient
cell-mediated immunity
~T cells respond directly to antigens
~destruction of target cells (virus-infected/CA cells) thru secretion of lymphokines
~EX:rejection of transplanted organs, delayed immune responses that fight disease
antigens
~foreign substances
~EX:bacteria, toxins
~induce antibody formation
lymphokines
lymph proteins
types of T cells
~killer
~helper
~suppressor
killer cells
~bind to surface of the invading cell, disrupt membrane, destroy it by altering its internal environment