A vascular arrangement linking 2 capillary beds in series from one organ to another by connecting vessels often veins It involves two distinct sets of capillaries before returning to the heart ID: 1037696
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1. A Portal System in the Cardiovascular SystemA vascular arrangement linking 2 capillary beds in series from one organ to another by connecting vessels (often veins). It involves two distinct sets of capillaries before returning to the heart.ArteryArterioleCapillary Bed # 1Capillary Bed #2Vein?
2. There are three (3) examples of Portal Systems in the Body:1) Hepatic Portal System2) Renal (Nephron)3) Hypothalamic - Hypophyseal
3. Blood Sample #1Blood Sample #2Blood Sample #3ArteryArterioleCapillary Bed # 1Capillary Bed #2Hepatic Portal VeinSmall IntestineLiverHepatic VeinInferior Vena CavaAorta1) Hepatic Portal System
4. Blood Sample #1 O2 Rich Nutrients Mod/Low Toxins LowBlood Sample #2 O2 Low Nutrients High Toxins HighBlood Sample #3 O2 Poor Nutrients Moderate Toxins LowThe purpose of the Hepatic Portal system is to stabilize the systemic blood. The results of the blood sample below explain how this vascular arrangement achieves this.ArterioleHepatic Portal VeinHepatic Vein
5. Afferent Arteriole(incoming vessel to the glomerulus)Efferent Arteriole(outgoing vessel from the glomerulus)GlomerulusPeritubular CapillariesVasa Recta CapillariesArcuate Veins2) Renal Portal System: In the Nephron of KidneyVenulesCapillary Beds #2 Capillary Bed #1 Arcuate artery
6. Superior Hypothalamic Artery (Anterior Pituitary)Hypophyseal Portal Vein(s)(Hypothalamic – Hypophyseal portal system)Primary Capillary PlexusSecondary Capillary Plexus3) Hypothalamic – HypophysealBetween the Hypothalamus and the Anterior Pituitary glandInferior Hypothalamic Artery (Posterior Pituitary)Hypophyseal Vein(s)Capillary Bed #2 Capillary Bed #1 Releasing/Inhibiting Hormones Anterior Pituitary Hormones