The pudendal nerve is a major nerve in the human body that primarily supplies sensation to the genital area. It originates from the sacral plexus, specifically from the S2, S3, and S4 spinal nerves. This nerve plays a crucial role in the function of the pelvic floor, providing both sensory and motor innervation to various structures, including the external genitalia and the anal sphincter. In addition to sensation, the pudendal nerve is important for sexual function and urinary control. It helps facilitate voluntary movements, such as the contraction of the pelvic muscles, which are essential for activities like urination and defecation. Damage to this nerve can lead to various issues, including pain, incontinence, or sexual dysfunction.