A&P Exam 1

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Author:
sg0369295
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261424
Filename:
A&P Exam 1
Updated:
2014-02-11 11:35:24
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Bio
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Biology
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Exam 1
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  1. What are the 6 levels of organization?
    • -Chemical-Atoms combine to form mol.
    • -Cellular-Cells made up of mol.
    • -Tissue-similar cells that work together.
    • -Organ-different tiss. that work together.
    • -Organ System-Diff. org. that work together
    • -Organismal-made up of many Organ Sys.
  2. What are the 8 necessary life functions?
    • -Maintaining boundaries
    • -Movement
    • -Responsiveness
    • -Digestion
    • -Metabolism
    • -Excretion
    • -Reproduction
    • -Growth
  3. What are the appropriate levels of "survival needs"?
    • -Nutrients
    • -Oxygen
    • -Water
    • -Body temperature
    • -Atmospheric pressure
  4. Homeostasis
    • -Body's ability to maint. a relatively stable environment.
    • -Dynamic state of equilibrium
    • -Internal conditions vary, but only within limits.
    • -Internal cond. are constantly disrupted by internal and external stimuli. So control requires cont. monitoring and regulation of many factors(variable)
  5. Variable
    Condition or event that is being monitored.
  6. Receptor
    Monitors the variable.
  7. Control center
    Analyzes input from receptors and determines appropriate response input and output.
  8. Effector
    Responds to output from control center.
  9. Negative Feedback Mechanism
    • Reverse the change in the variable.
    • This is the most common.
  10. Positive Feedback Mechanism
    Enhance or strengthen the change in the variable.
  11. What two organ sys. are the most imp. in control of homeostasis.
    Nervous and Endocrine.
  12. Matter
    Anything that has mass or space.
  13. What are the three states of matter?
    • -Solid
    • -Gas
    • -Liquid
  14. What 4 elements form 96% of body mass?
    • -Carbon
    • -Oxygen
    • -Nitrogen
    • -Hydrogen
  15. What 9 elements form 3.9% of body mass and their symbols?
    • -Calcium Ca
    • -Phosphorus P
    • -Potassium K
    • -Sulfur S
    • -Sodium N
    • -Chlorine Cl
    • -Magnesium Mg
    • -Iodine I
    • -Iron Fe
  16. What are the building blocks of elements?
    Atoms. This gives elements their physical and chemical properties.
  17. Molecules
    Two or more atoms bonded together.
  18. Chemical Bonds
    Holds atoms combined with other atoms together.
  19. Chemical Energy
    Energy stored in chemical bonds.
  20. Electrical energy
    results from movement of charged particles.

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