Human Biology II

Homework #3

Please submit typed answers no later than Thursday February 6th.Remember to include enough detail to convey the full extent of your answer.

1.Explain how a sensation occurs

2.What is the fight-or-flight response?Which chemicals(s) are critical in initiating this response, and where are they produced?

3. Describe the vitreous humor. (include structure and function)

4.How are the senses of taste and smell similar?Explain how they are interrelated.

5. How would you explain the fact that some serious injuries, such as those produced by a bullet entering the abdomen, may be relatively painless, but others, such as those involving crushing of the skin may produce considerable discomfort?

6. Given that hormones contact virtually all cells in the body, why are only certain cells affected by a particular hormone?