Blood Vessel & Lymphatic Vessel
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Transcript of 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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