While not the Tortora text, (a Rice University nonprofit) offers a free, peer-reviewed Anatomy and Physiology textbook. It is a PDF, downloadable legally for $0, and covers every body system. Use it as a supplement. When your assignment references a specific diagram from Tortora, look up the same concept in OpenStax.

If your library’s copy is checked out, use ILL. The librarian will borrow a copy from another university across the state or country. You can often keep it for 2–4 weeks. Cost? Usually free.

Here is the good news: You do not need to pirate the book to avoid paying full price. There are to access this exact edition.

The "Principles of Anatomy and Physiology" 16th edition is a comprehensive textbook written by Gerard J. Tortora and Bryan Derrickson. The book provides a clear and concise introduction to the study of anatomy and physiology, covering the fundamental principles and concepts that underlie the structure and function of the human body. The textbook is divided into 28 chapters, which are organized into 7 units. Each chapter begins with a set of learning objectives, followed by a clear and concise explanation of the material, accompanied by illustrations, diagrams, and photographs.