human anatomy lecture notes 5

B basophils represent less than 1 of wbcs longlived

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Unformatted text preview: icles in cytoplasm (see ppt slides)  ­important in initiation 'innate' immune response (ie. inflammation) a) Neutrophils:  ­ Most abundant white blood cell (~60 ­70% of WBCs); very short ­lived  ­ Multilobed nucleus = polymorphonuclear (PMN)  ­ Secretory vesicles do not stain well with Wright's stain (therefore appear 'neutral') an contain anti ­bacterial enzymes. b) Basophils:  ­ Represent less than 1% of WBCs, long ­lived.  ­ The granules contain histamine (vasodilator) and heparin (anticoagulant); together with mast cells responsible for boosting an inflammatory response c) Eosinophils:  ­ Eosin stains basic proteins within the secretory vesicles/granules; short ­lived  ­ Compose 2% of the WBCs (white blood cells)  ­ Active during later stages of innate and adaptive immune responses and are important for decreasing/ending the an immune response 2. Agranulocytes  ­ cytoplasmic granules much less prevalent a) Monocytes – Activated to become macrophages in C. Tissues b) Lymphocytes – Impor...
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