Test 2 is on the Endocrine and Respiratory system. A lot of this test is a matter of remembering exact processes that cause reactions in the body. You will need to understand cAMP and second messenger systems, and know what different hormones are responsible for. You will need to be able to trace the path of air into and out of the lungs, and understand gas exchange between the blood and lungs.

The Endocrine System

http://www.proprofs.com/flashcards/tableview.php?title=hormones-their-functions
There is an abundance of information on the endocrine system and it can be overwhelming, but most of the hormones in this chart are discussed frequently in class and it it vital that you are able to identify them. This website provides virtual note cards that you can hide or show on the website while you are studying them. The information is even given to you in an organized chart if you just need it as a reference.

The Respiratory System

http://starklab.slu.edu/PhysioLab/NKPhysioLungsAnswer.htm

This is a link to a study guide for the respiratory system created for students at St. Louis University, but it covers the same material that you may be expected to know here. It includes 66 questions, as well as answers for each one. It asks mostly physiology questions, but some anatomy is also covered.

http://people.eku.edu/ritchisong/301notes6.htm

This page has a very wide range of coverage on the respiratory system, covering gas exchange, mechanics of breathing, and even explains the pathway of air. You will also find videos and diagrams on this page to help you understand what the text is talking about. The page contains a lot of detail and will be useful, especially when trying to understand how gas exchange works.