Biology 12

Chapter 6 The Endocrine System • MHR 191

SECTION REVIEW

1. Describe how two different information
   pathways control hormone secretion in the adrenal
   glands.


2. Compare the functions of the hormones
   produced by the adrenal medulla and the adrenal
   cortex.


3. Make a concept map to describe the typical
   physiological symptoms of stress, the systems and
   tissues involved, and possible factors that may trigger
   a stress response in an individual.


4. Refer back to the stress test you performed in
   the Web Link on page 185. What are some coping
   strategies that might help you deal with stressful
   situations in the future?


5. Compare the functions of adrenaline and
   noradrenaline in the nervous and endocrine systems.


6. The body’s response to stress involves different
   hormones. Is this a negative feedback loop or a
   positive feedback loop? Explain your answer.


7. Describe how adrenal gland activity would be
   affected by the consumption of food with a high salt
   content.


8. Explain why ACTH is sometimes used to treat
   problems associated with the adrenal gland.


9. Make a chart listing the physical impact of too
   much or too little corticoid secretion.
   10. Create a flowchart showing the sequence of
   steps that lead to anaphylactic shock.
   11. Describe the “fight-or-flight response.”
   12. How did Hans Selye contribute to our
   understanding of stress?
   13. Does caffeine contribute to stress or decrease
   stress? How could you determine this? Develop a
   testable hypothesis for this problem.
   14. Studies with rats suggest that overcrowding
   causes behaviour changes.
   (a)Describe the impact of overcrowding in terms of
   stress.
   (b)Can you find evidence that people living in cities
   are more prone to stress than people living in less
   crowded environments?
   (c)If city dwellers are found to be more prone to
   stress, can you conclusively link this to population
   density, or are there other factors that may be
   more relevant?
   15. Current news stories from around the world claim
   that more people now have an unhealthy body size.
   Many factors contribute to this problem, making it
   difficult to correct.
   (a)Outline how a high level of stress may be a factor.
   (b)Suggest preventative strategies.
   (c)Briefly describe a research plan to test the
   relationship between stress using mice as
   the subjects.

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