blood vessel & lymphatic vessel

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    Y. ANDWI ARI SUMIWI

    BAGIAN HISTOLOGI DAN

    BIOLOGI SEL

    FK UGM

    BLOOD VESSELS & LYMPHATICVESSELS

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    Sistem Sirkulatori :

    Sistem vasa darah

    Sistem vasa limfatika

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    Sistem vasa darah

    Jantung

    Arteri

    Kapiler

    vena

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    Sistem vasa limfatika

    Kapiler limfatik ---> berakhir pada sistem vasa darah (venabesar dekat jantung)

    Fungsi : mengembalikan cairan jaringan ke alirandarah

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    Macrovasculature : > 0,1 mm

    Arteriola besar, arteri muskular, arteri elastik, vena muskular

    Microvasculature :

    Arteriola, kapiler, venula postkapiler

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    Struktur Vasa Darah

    Tunica intima

    Endothelium

    Stratum subendothelial

    Lamina elastica interna (pd arteri) Tunica media Otot polos

    Serabut elastik

    Lamina elastica externa Tunica adventitia: jaringan ikat

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    Strukur umum dinding vasa darah

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    Arteri muscular & arteri elastic

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    Arteri elastic : aorta

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    Kapiler

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    Kapiler

    Kapiler kontinyu/ continuous capillaries

    Kapiler fenestrata/ fenestrated capillaries

    Discontinuous sinusoidal capillaries

    Karakteristik : Meluas (30-40m) dng sirkulasi lambat

    Sel endotel diskontinyu

    Makrofag diantara sel endotel atau di luar endothelium

    Lamina basalis diskontinyu

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    Continuous capillary

    Figure 1114.

    Electron micrographof a transverse sectionof a continuouscapillary. Note thenucleus (N) and thejunctions betweenneighboring cells(arrowheads).Numerous pinocytoticvesicles are evident(small arrows). Thelarge arrows showlarge vesicles beingformed by infoldingsof broad sheets of theendothelial cellcytoplasm. x10,000.

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    Fenestrated capillary

    Figure 1115. Afenestrated capillary in

    the kidney. Arrowsindicate fenestrae closedby diaphragms. In thiscell the Golgi complex(G), nucleus (N), andcentrioles (C) can be

    seen. Note thecontinuous basal laminaon the outer surface ofthe endothelial cell(double arrows).Medium magnification.

    (Courtesy of J Rhodin.)

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    Mikrosirkulasi

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    SISTEM VASA LIMFATIKA

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    Figure 1123. Structure of

    a lymphatic capillary at theelectron microscope level.

    Note the overlapping free

    borders of endothelial

    cells, the discontinuous

    basal lamina (arrows), and

    the attachment of

    anchoring fibrils (AF).

    (Courtesy of J James.)

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    Figure 1124. Two lymphatic vessels (LV). The vessel on top was sectionedlongitudinally and shows a valve, the structure responsible for theunidirectional flow of lymph. The solid arrow shows the direction of thelymph flow, and the dotted arrows show how the valves prevent lymphbackflow. The lower small vessel presents a very thin wall. PT stain.Medium magnification.

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