Respiration

Discussion of all aspects of cellular structure, physiology and communication.

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vhpk
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Respiration

Post by vhpk » Tue May 06, 2008 9:47 am

I want to ask 4questions:
1/Can you show me whether 2 questions are true or false and explain:
a/ In animals, a specalized respiratory system is always linked to a circulatory system
b/ The counter-current exchange system works by maintaining the oxygen concentration gradient between the respiratory medium and the blood
2/Explain how these two processes are involved in gas exchange:
a/ dissolving b/ diffusion
3/ What are three important adaptations in the mammalian respiratory system? What advantages do these adaptations provide?
4/Among lenticel, spiracle and stoma.
a/ Which of these structures open and close?
b/ Does opening and closing serve the same purpose for the different structures?
Thanks for helping. Any help would be highly appreciated? :D

vhpk
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Post by vhpk » Thu May 08, 2008 9:27 am

Hix, can anyone help me :(

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canalon
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Post by canalon » Thu May 08, 2008 2:54 pm

You? By reading your textbook, our tutorial, or asking questions showing that you are not asking us to do your homework, but that you rather have some conflicting//unclear/holey information, and that you need help to do your work by yourself.
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

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