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Excretory & Circulatory Systems

Excretory & Circulatory Systems. By: Ashton Caudle, Matt Evans, & Brooks Kern. Hypertension & Nephrons. H igh blood pressure affects your kidneys by the extra force against the little arteries that interface with the tiny filtering units in the kidney.

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Excretory & Circulatory Systems

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  1. Excretory & Circulatory Systems By: Ashton Caudle, Matt Evans, & Brooks Kern

  2. Hypertension & Nephrons • High blood pressure affects your kidneys by the extra force against the little arteries that interface with the tiny filtering units in the kidney. • Little filtering units = nephrons. • Nephronsare damaged by years of stress and over time their efficiency and function decrease

  3. Parts: • Kidneys • Ureter • Urethra • Urinary bladder • Liver • Skin • Lungs • Kidneys • Main organs • Keeps salt concentration balanced • Mass of tiny tubes • Each tube is a knot of capillaries • Skin & Lungs • Skin excretes extra salts, water, and heat • Lungs exrete carbon dioxide from the body Excretory System Body system that separates and gives off the waste from the body, usually as urine or sweat. • Ureter, Urethra, & Bladder • Ureter carries urine away from kidneys to bladder • Urethra carries urine from bladder to outside the body • Liver • Changes ammonia (poisonous product of protein digestion) into urine

  4. The Nephron • Basic structural and functional unit of the kidney • Chief function is to regulate the concentration of water and soluble substances by filtering the blood, reabsorbing what is needed, and excreting the rest • Regulates blood volume, pH and pressure • Its functions are vital to life

  5. Circulatory System Transportation system by which oxygen and nutrients reach the body’s cells and waste materials are carried away. It also carries hormones, which control body processes and antibodies to fight invading germs. Parts: Blood Vessels Heart Blood Pumps blood throughout the entire body Carries nutrients, water, and waste products to and from the body Arteries-carries blood AWAY from heart Veins-carries blood TO heart

  6. Blood Vessels Arteries -main = aorta (divides and branches) Veins -Receive blood from capillaries -Transport waste and oxygen poor blood back to lungs and heart -Allow blood to move in one direction Capillaries -Very thin (only one cell thick) -Connects arteries and veins -Food and oxygen released into body cells -CO2 and other waste products returned to blood stream

  7. Interactions The circulatory system provides the excretory system with blood to be cleaned. Circulatory sends blood through kidneys and other excretory organs to be filtered Organs remove toxins and other waste substances

  8. Hypertension -Also known as high blood pressure • Symptoms: • Headache • Dizziness • Shortness of breath • Blurred vision • Causes: • Consuming too much salt • Drinking too much alcohol • Not eating enough potassium • Not exercising • Taking certain medicines • Stress that is long lasting • Higher risks: • Overweight • Man over 45 • Woman over 55 • Family history • Pre-hypertension • Have heart disease, diabetes, high cholesterol, previous strokes, kidney damage, damage to retina, and damage to blood vessels • Treatment: • Adopt a healthier life style • If condition persists, certain medicines can be taken

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