Year 1 taught you the systems. This year you open the body layer by layer — skin, fascia, muscle, vessel, nerve — and learn what lies beside what. Every triangle, space, canal and fissure TMU has ever asked about, verified against Gray's 4e.
Regional Anatomy is not examined the way Systematic Anatomy was. Forty percent of the paper is definitions and picture labelling — short, precise, memorised answers about boundaries and contents. Learning the prose without drilling the boundary lists will cost you the paper. Start with the Definitions Bank, then read the units.