This document discusses the anatomy and examination of the anus, rectum, and prostate. It describes: - The anatomy of the anal canal, rectum, and structures like the prostate gland. - Common symptoms involving the anus and rectum that should be asked about. - Techniques for examining the anus and rectum in both male and female patients, including inspecting for abnormalities and examining the interior with a lubricated finger. - The normal characteristics of the prostate that should be evaluated during a digital rectal exam.