Biol 150

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Anonymous
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76636
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Biol 150
Updated:
2011-04-01 13:51:51
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human biology
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test 3
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  1. What is a bronchus?
    This is the tube that branches off the trachea and enters the lungs.
  2. What is the trachea?
    The tube that goes from the nasal cavity and carries air to the lungs.
  3. What is the pharynx?
    The area at the back of the throat.
  4. What is the diaphragm?
    The thin muscle that divides the chest cavity and abdominal cavity.
  5. What is the larynx?
    It is also known as the voice box.
  6. This accounts for 90% of lung cancers.
    Smoking.
  7. Increases the risk of stroke and heart attack.
    Smoking.
  8. Every year in the US this kills about 440,000 people.
    Smoking.
  9. This increases the risk of having emphysema and COPD.
    Smoking.
  10. This is responsible for premature aging of the skin, resulting in characteristic wrinkles around the mouth and on the face.
    Smoking.
  11. What is diffusion?
    How oxygen moves from the alveoli to the capillaries.
  12. How many oxygen molecules can each hemoglobin molecule carry?
    Four.
  13. Hemoglobin contains what inorganic molecule, to which oxygen binds?
    Iron.
  14. Hemoglobin also carries this waste product of metabolism.
    CO2
  15. These finger-like projections in the trachea help sweep mucous and foreign particles up and out of the respiratory tract.
    Cilia
  16. Arteries carry blood this direction from the heart.
    Away.
  17. Veines carry blood this direction from the heart.
    To the heart.
  18. This plasma proteine is involved in blood clotting.
    Fibrinogen.
  19. What is the matrix in which blood cells are suspended?
    Plasma.
  20. These proteins interfere with the ability of a virus to infect cells neighboring an infected cells
    Interferons.
  21. What branch of the immune system is not antigen specific
    Innate immune system
  22. What cell type make antibodies?
    B cells
  23. What are the cells that are infected by HIV?
    Helper T cells.
  24. What cells attack virus infected cells directly?
    Cytotoxic T cells.
  25. Where HIV comes from?
    It mutated from a virus in chimps.
  26. This enzyme is used to make copies of HIV's RNA genome into proviral DNA.
    reverse transcriptase
  27. What bodily secretions can HIV be found in?
    Blood, genital and breast milk.
  28. What dose AIDS stand for?
    Acquired Immunodeficiency Syndrome
  29. What skin cancer is often seen in AIDS patients
    Kaposi's Sarcoma
  30. What is a loss or gain of heat between objects in direct contact?
    Conduction
  31. What is a loss or gain of heat by movement of air across a surface?
    Convection
  32. What animals maintain their body heat by using heat generated by metabolism?
    Endothermics
  33. What animals maintain their body heat by transfer of heat from external sources.
    Ectothermics
  34. These insects shiver together in a group to maintain warmth in the winter and fan droplets of water in the summer to cool off their home
    Bees
  35. What are examples of animal adaptations used to keep warm?
    Fur, feathers and blubber
  36. What are examples of behavioral adaptations used to regulate body heat?
    Migration, shivering, moving to shade, curling up to sleep
  37. What animals have the same internal concentration as seawater?
    Osmoconformers
  38. Most nitrogenous waste come from what two sources?
    Amino acids and nucleic acids.
  39. Most aquatic animals secret their nitrogen in what form?
    Ammonia.

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