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Human Circulatory System
 

Human Circulatory System

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    Human Circulatory System Human Circulatory System Presentation Transcript

    • Circulatory System
    • Circulatory System
      Carries nutrients, oxygen and other substances to all the cells of the body
      Carries away waste products
      Distributes oxygen throughout the body
      Contains 3 main parts
    • Main Parts
      Heart – acts like a pump moving blood throughout the body
      Blood – made of many parts
      Blood Vessels – consists of veins, arteries, and capillaries
    • THE BLOOD
    • Function of Blood
      Transport oxygen and nutrients throughout the body
      Carries waste materials to the lungs and kidneys
      Regulates body temperature
      Fights diseases
    • Parts of Blood
      Plasma
      Red Blood Cells
      Platelets
      White Blood Cells
      What do you already know?
    • Plasma
      Platelets
      White blood cells
      Red blood cells
      Whole Blood Sample
      Sample Placed in Centrifuge
      Blood Sample That Has Been Centrifuged
    • Plasma
      Platelets
      White blood cells
      Red blood cells
      Whole Blood Sample
      Sample Placed in Centrifuge
      Blood Sample That Has Been Centrifuged
    • Plasma
      Platelets
      White blood cells
      Red blood cells
      Whole Blood Sample
      Sample Placed in Centrifuge
      Blood Sample That Has Been Centrifuged
    • Plasma
      Liquid part of blood
      Made of water and other molecules
      Clear, yellowish liquid
    • Carries dissolved nutrients to the cells of the body
      Carries carbon dioxide and wastes away from the cells
      Makes up about 55% of blood
    • Red Blood Cells
      Makes up about 44% of blood
      Relatively small in size
      Numerous in number
      Cells are disk shaped with the center of each side pushed in
    • Red Blood Cells Cont.
      Carries oxygen molecules from the lungs to other parts of the body
      Do not have a nucleus
      Cannot reproduce
      Get color from oxygen – carrying chemical called hemoglobin
    • Platelets
      Small, colorless packets of cytoplasm
      Causes blood to clot
      Blood Clot: think about your scabs… and draw a picture of how this works.
    • Notice how they form a trail – they stick together to any foreign surface!
    • White Blood Cells
      Relatively large
      Few in number
      Have a nucleus
      Fights invading organisms by producing antibodies (FIGHTS GERMS!)
    • http://en.wikipedia.org/wiki/White_blood_cell
      Look at the table to view different kinds of white blood cells.
      What are some of the things your white blood cells do for your body?
    • Red vs. White Cells Real Player Video
    • Blood Vessels
    • 3 Major Types of Blood Vessels
      Arteries – Blood vessels that carry blood away from the heart
      Veins – blood vessels that carry blood to the heart
      Capillaries – tiny blood vessels that connect arteries to vein
    • With each heartbeat, arteries carry about 20 to 25 percent of your blood to your brain, where billions of cells use about 20 percent of the oxygen and fuel your blood carries.
      When you are thinking hard, your brain may use up to 50 percent of the fuel and oxygen.
    • Interactive of how it works…
      http://www.kscience.co.uk/animations/blood_system.swf
    • Complete Diagram
      Moving Blood to and away from the Heart
    • Arteries and Veins
      Real Player Video Clip
    • The Heart
    • The Heart
      Powerful, muscular pump
      Maintains a continuous flow of blood around the body
      Divided into 2 halves
      Atrium: smaller, upper chamber
      Ventricle: larger, lower chamber
    • The Heart
      http://www.ahealthyme.com/Imagebank/heart.swf
    • Heart Interactive 2
      http://science.nationalgeographic.com/science/health-and-human-body/human-body/heart-article.html
    • Animated Heart
      http://www.medtropolis.com/VBODY.ASP
    • Label Diagram
      Label the diagram in your notes now.
    • The Path of Blood
      The heart pumps blood to the lungs
      The blood gets oxygen in the lungs
      The blood returns to the heart
      The heart pumps the oxygenated blood to the cells in the body
      The blood delivers oxygen to the body cells
      The deoxygenated blood travels back to the heart
    • What can you do to stay healthy?
      Eat right!
      Exercise!
      Don’t Smoke!