ABSTRACT
Anatomy The male urethra is a tubular structure extending from the bladder neck to the external urinary meatus at the tip of the glans penis. During its course through the prostate it is compressed from each side by the lateral lobes of the prostate, giving it a slitlike configuration. The verumontanum is a small hillock of tissue indented at its crown by a pit called the utriculus masculinus. The verumontanum marks the proximal extent of the external urethral sphincter and is an important landmark for urologists performing transurethral resection of the prostate. The distal urethra is invested by erectile tissue of the corpus spongiosus. It is normally flattened anteroposteriorly but distends when filled with fluid. The most proximal section distends most and is known as the urethral bulb.
