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  1. page Respiratory System edited ... What are gills? Gills are out-foldings of the body surface that are suspended in the water. W…
    ...
    What are gills?
    Gills are out-foldings of the body surface that are suspended in the water. Without considering the distribution of the gills, the gills have a total surface area much greater than that of the rest of the body. Movement of the respiratory medium over the respiratory surface, a process called ventilation, maintains the partial pressure gradients of oxygen and carbon dioxide across the gill that are necessary for gas exchange. This means that the fishes have to usually move their gills through the water or move water over their gills.
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    external image respiration.jpgFigurerespiration.jpg
    Figure
    1.3 shows
    Video 1.1 shows the process of respiration.
    II. Gas exchange:--C. Respiratory Surfaces:--2. Tracheal Systems in Insects:2. Tracheal Systems in Insects:
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    3. Then during exhalation, air is forced back out by the elastic recoil of the lungs and by compression of the muscular body wall.
    {http://www.2classnotes.com/images/12/science/Zoology/Lowering_of_lower_Jaw_Closing_of_external_nares_and_rising_of_lower_jaw.gif} external image Lowering_of_lower_Jaw_Closing_of_external_nares_and_rising_of_lower_jaw.gifFigure 1.6 shows an amphibian's breathing structure, which is very different from those of mammals and birds
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    external image Gamabunta.jpgFigureGamabunta.jpg
    Figure
    1.6a shows
    However this process can be disrupted when they engage in courtship rituals or aggressive behavior, and this is when air is taken in several times before being exhaled. A similar process that applies in birds and mammals called exercise.
    III. Breathing Ventilates the Lungs:--B. Mammal Breathing:B. Mammal Breathing:
    (view changes)
    2:11 pm
  2. page Nervous System edited ... Ashley: IS THIS COLOR xD Ada is this colour ... is black PS for those viewing, the wiki m…
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    Ashley: IS THIS COLOR xD
    Ada is this colour
    ...
    is black PS for those viewing, the wiki makes the spaces...so don't mind them sorry for the messiness
    The Nervous System
    {Screen_shot_2011-03-20_at_10.38.29_AM.png}
    (view changes)
    10:54 am
  3. page Nervous System edited ... {http://www.wikispaces.com/site/embedthumbnail/custom/8768946?h=93&w=93} The NERVOUS SYS…
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    {http://www.wikispaces.com/site/embedthumbnail/custom/8768946?h=93&w=93}
    The NERVOUS SYSTEM, yes be amazed....
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    the PNS
    {Screen_shot_2011-03-10_at_10.52.26_AM.png} Screen_shot_2011-03-10_at_10.52.26_AM.png
    neurons - nerve cells that transfer information throughout the body
    ...
    depolarization opens both the potassium and sodium channels that respond independently
    the sodium channel opens first forming the action potential and then as the action potential proceed, the sodium channel becomes inactivated
    ...
    the channels closeclos
    potassium channels remain open through the action potentials
    Stages
    (view changes)
    10:52 am
  4. page Immune System edited Chris, Bryan, Chris Canchola, Byron Castaneda, Jonathan Tonel The Immune System Overall fu…

    Chris, Bryan,Chris Canchola, Byron Castaneda, Jonathan Tonel
    The Immune System
    Overall function
    (view changes)
    10:47 am
  5. page Excretory System edited ALBERT LEE, BEN NGUYEN, THEO TAN 1. THE EXCRETORY SYSTEM Overall, the excretory system acts i…

    ALBERT LEE, BEN NGUYEN, THEO TAN
    1. THE EXCRETORY SYSTEM
    Overall, the excretory system acts in order to maintain a healthy fluid environment within animals. It works in order to remove nitrogenous wastes such as ammonia (which is a highly toxic compound). Due to the fact that osmoregulation is structurally and functionally linked in many animals, the process of osmoregulation will also be included. Osmoregulation is the general process by which animals control solute concentrations and balance water gain and loss.
    (view changes)
    10:47 am
  6. page Reproduction System edited REPRODUCTIVE SYSTEM -Sahaj Patel -Jessie Wong -Crystal Vinuya Quick Overview: Key Concepts…

    REPRODUCTIVE SYSTEM
    -Sahaj Patel
    -Jessie Wong
    -Crystal Vinuya

    Quick Overview:
    Key Concepts:
    (view changes)
  7. page Immune System edited Chris, Bryan, Jonathan The Immune System Overall function

    Chris, Bryan, Jonathan
    The Immune System
    Overall function
    (view changes)
    10:46 am

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