The scrotum, testes (testicles), vas deferens, seminal vesicles, and prostate comprise the rest of the reproductive system. The penis consists of the root (which is attached to the lower abdominal structures and pelvic bones), the visible part of the shaft, and the glans penis (the cone-shaped end).The opening of the urethra (the channel that transports semen and urine) is located at the tip of the glans penis.he penis consists of the root (which is attached to the lower abdominal structures and pelvic bones), the visible part of the shaft, and the glans penis (the cone-shaped end). The opening of the urethra (the channel that transports semen and urine) is located at the tip of the glans penis.
Colectomy is a surgical procedure to remove all or part of the colon. When only part of the colon is removed, it is called a partial colectomy.
For purposes of simplicity, the term colon is often used to refer to any of the components of the large intestine, save the rectum. A colectomy that involves removing the entire colon is called a total colectomy. If most of the colon is removed, the procedure is called a subtotal colectomy. When a segment of the colon is removed, it may be called a segmental colectomy, and it may be labeled a hemicolectomy to differentiate the right and left halves of the large intestine.