resperation

resperation releases energy from glucose so that life processes can carry on.
1. aerobic resperation
  1. aerobic respiration is the respiration that needs oxygen.
2. anaerobic respiration
  1. anaerobic respiration is the respiration where it does not need oxygen
3. life processes
  1. growth and repair
  2. movement
  3. control of body temperature in mammels
4. resperation is a chemical reaction that happens in all living cells, including pland and animal cells. it is the way that energy is released from glucose so that all the other chemical processes needed for life can happen.
DO NOT confuse respiration with breathing
the word equation for aerobic respiration is: glucose + oxygen = carbon dioxide + water
the word equation for anaerobic respiration is: glucose = lactic acid
aerobic respiration needs oxygen, and it produces carbon dioxide as a waste product. the human respiratory system contains the organs that allow us to get the oxygen we need and to remove the waste carbon dioxide we do not need. it contains:
1. Two lungs
2. tubes leading from the mouth and nose to the lungs
3. various structures in the chest that allow air to move in and out of the lungs
4. when we breath(inhaling) in our:
  1. diaphragm contracts and moves downwards.
  2. our intercostal muscles contract,moving the ribs upwards and outwards.
  3. the volume of our ribcage increases
  4. the pressure in our chest decreases below atmospheric pressure.
  5. the movement of air moves into the lungs
5. when we breath out(exhaling) our:
  1. diaphragm relaxes and moves upward
  2. intercostal muscles relax, letting the ribs move downward and inward
  3. the volume of our ribcage decreases
  4. the pressure inside the chest increases above atmospheric pressure
  5. the movement of air moves out of the lungs
alveoli
1. the alveoli are adapted to make gas exchange in lungs happen easily and efficiently. some of the features of the alveoli are:
  1. they give the lungs a really big surface area
  2. they have moist thin walls (one cell thick)
  3. they have a lot of tiny blood vessals called capillaries
  4. the gases move by diffusion from where they have a high concentration to where they have a low concentration;
    1. oxygen diffuses from the air in the alveoli into the blood
    2. carbon dioxide diffuses from the blood into the air in the alveoli
2. we need to get oxygen from the air into our blood, and we need to remove waste carbon dioxide from the blood into the air. moving gases like this is called gas exchange

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	Criado por Daniel Quick quase 8 anos atrás