I have a few suggestions for how to study for lab practicals:
1. Make a notecard for every model you will be responsible for memorizing and label it accordingly, e.g., "Flat Face" or "Rubber Head." Most students try to memorize by body part versus model, but that body part is going to look different on every model. So try memorizing by model instead.
2. Identify each body part on each model and write it on the note card in the order of natural body flow, e.g., "Flat Face - mouth, epiglottis, trachea, esophagus, etc." This will help because not every body part will be included on every model.
3. Once you have completed a card (or two or three) for each model, use funny descriptions to help you identify the more difficult body parts, e.g., really weird color, looks like an icky worm, etc.
4. Lastly, use the notecard to repeat outloud every body part for that particular model (in order) about 50 times. 😉
I usually wouldn't get to step #4 until the day before the test, but that gave me plenty of time to simply memorize. This was the process that worked best for me, and I never scored less than a 97 on my lab practicals in both A&P 1 and 2. The trick is to spend several hours - days initially organizing all the material in a form that makes it much easier to digest (no pun intended). Hope this helps you a little bit.