Snell's Clinical Anatomy for Medical Students

Keith L. Moore's Clinical Anatomy

Frank H. Netter Atlas of Human Anatomy

Michael Ross Histology: A text and atlas

Langman's Embryology

Di Fiorre's Atlas of Histology

Lippincott's Illustrated Review of Biochemistry (3rd edition)

Guyton and Hall's Medical Physiology

Review of Medical Physiology by William F. Ganong

There are some other books that you can only find here in Pakistan which you should get also, but they're just books you'll use a couple times here or there for odd topics. They're widely available, and they're names are sure to come up here and there.

Btw, for second year, you'll use these same books. The only additional book that you'll need is a neuroanatomy book. A good one is Snell's Neuroanatomy for Medical Students. Same author as the gross anatomy book above.