1. As you trace the path of blood through the human body, tell how each exchange surface contributes to homeostasis. (An exchange surface is a region where the composition of blood is altered by substances leaving and/or exiting blood.)

2. Use regulation of body temperature to illustrate maintenance of homeostasis by a feedback mechanism.

3. Use regulation of normal blood pressure to illustrate how the nervous system and the endocrine systems are both involved in maintaining homeostasis.

4. Use the regulation of blood pH to illustrate that there are short-term and long-term mechanisms for maintaining homeostasis.

5. Use the regulation of a normal blood glucose concentration to illustrate that contrary actions of hormones help maintain homeostasis. 

you can answer any or all of them it would be a huge help thanks!