Draw pictures whenever possible. In a class like physiology, you can draw pictures for just about every topic except the hormones. For example, I probably drew the spinal cord cross-section 40x along with all of the sensory pathways included (did motor on dif sheet), where they decussate, which layers they synapse in, myelination VS unmyelinated, fiber type, etc, and included important labeling and info along with it.
For anatomy, draw out each muscle, where it attaches proximally, distally, etc. Draw the organs and individual bones. Draw out diagrams for things like receptor-mediated endocytosis, glycolysis, krebs.
Sometimes, you can't draw pictures and have to straight up memorize.