False. Vaccinations work by exposing you to small amounts of the disease so that your body can produce antibodies therefore becoming somewhat immune to that disease. They basically boost your bodies defense system for what ever you are being vaccinated for.
One great way to study medical terminology is to, first, gather supplies such as index cards to write down your terms and functions, etc. When preparing for a test I recommend getting a friend and having them point to different parts of your body and asking their functions. Make sure you are right by using a cheat sheet that includes everything you need to know.
The answer is Blood Chemistries.
If it's getting annoying or is in any way inappropriate, cut it off now. However, if he is not completely mean, wait. You don't want to be unkind. Funniest thing to do would be to say "You're like a brother to me," But that would be mean and awkward, so it's best to just wait it out...
