I agree with what the other posters have said, esp. Harleyhead. A & P IS tough, but the memorization is essential. We do not all learn all things at the same pace, either. I would consider cutting work hours, and dropping Biochem. You are looking at some seriously intense studying, for all 3 classes! When you set your next schedule, try to balance the classes somewhat-such as 1 very study-intense class per semester/quarter, mixed with a couple of less demanding courses.
When you have a good GPA, it is a big blow to get a 76, but those can definitely be overcome. Give yourself a break-you won't get an A in A & P, but there is no reason you can't get a good, respectable B. Unless I miss my guess, your first two tests have been on bones and muscles, right? Just keep reviewing your study materials when you study new material, and yuo will know where everything is, and what it is called. Good luck!