Hi everyone! I am currently taking Human Biology 100. It is basically the same as Anatomy and Physiology, we are allowed to take this and 145 in place of the 2 anatomy courses (I am taking them as a refresher since I had taken both A&P classes 13yrs ago). Currently we are on the Nervous System and this is the first chapter that has actually given me a hard time. The first three test I received 97 and 104 out of 105 and a 121 out of 127. Something about this chapter is really giving me a hard time though. My question is how much of this do you actually have to know once you are out of school? Do you actually have to know every little detail such as the neurolgia, Astrocytes, and what they do or just a basic understanding that the body receives info through sensory, integrates the info and sends out a motor response. Just how much detail do you actually have to Know? The past 3 test I have studied really hard for and then 1/2 wasn't even on the test. I miss my family so I don't want to continue spending every waking second studying, and my grandmother (who I help care for) is sick and just came home from the hospital so I need to have time for her too. I don't want to just "get by" with my class either and end up not being capable of taking care of pts in the future. How much is enough?