Surgery to the urethra to remove kidney stones has been described since at least the first century AD by Aulus Cornelius Celsus. Additional images
See also
Perineal urethra
Vulvovaginal health
Urethral glands
Urethral sponge
Sexual stimulation: Urethral sounding and Urethral intercourse
Urethrorrhagia
Urethrotomy
Internal urethral orifice

References
External links
Histology at KUMC epithel-epith07 "Male Urethra"
After the blood collection process, in vitro hemolysis can still occur in a sample due to external factors, such as prolonged storage, incorrect storage conditions and excessive physical forces by dropping or vigorously mixing the tube. From mechanical blood processing during surgery
In some surgical procedures (especially some heart operations) where substantial blood loss is expected, machinery is used for intraoperative blood salvage. A centrifuge process takes blood from the patient, washes the red blood cells with normal saline, and returns them to the patients blood circulation. Hemolysis may occur if the centrifuge rotates too quickly (generally greater than 500 rpm)—essentially this is hemolysis occurring outside of the body. Increased hemolysis occurs with massive amounts of sudden blood loss, because the process of returning a patients cells must be done at a correspondingly higher speed to prevent hypotension, pH imbalance, and a number of other hemodynamic and blood level factors. Modeling of fluid flows to predict the likelihood of red cell membrane rupture in response to stress is an active area of research. From bacteria culture
Visualizing the physical appearance of hemolysis in cultured blood samples may be used as a tool to determine the species of various Gram-positive bacteria infections (e.g., Streptococcus). Nomenclature
Hemolysis is sometimes called hematolysis, erythrolysis, or erythrocytolysis. The words hemolysis () and hematolysis () both use combining forms conveying the idea of "lysis of blood" (hemo- or hemato- + -lysis). The words erythrolysis () and erythrocytolysis () both use combining forms conveying the idea of "lysis of erythrocytes" (erythro- ± cyto- + -lysis).