Concept
Uretère
Concepts associés (29)
Urètre
L'urètre (orthographié parfois urèthre) est le canal de sortie de la vessie. Il a une fonction excrétrice dans les deux sexes (sortie de l’urine) et de plus chez l’homme une fonction reproductrice (passage du sperme). Urétral (ou uréthral) est l’adjectif correspondant (noter le changement d’accent sur le e). Le sphincter de l'urètre est le muscle qui permet le contrôle volontaire sur la miction. Il ne faut pas confondre l’urètre et l’uretère, qui est le conduit qui part des reins et transporte l'urine vers la vessie.
Intermediate mesoderm
Intermediate mesoderm or intermediate mesenchyme is a narrow section of the mesoderm (one of the three primary germ layers) located between the paraxial mesoderm and the lateral plate of the developing embryo. The intermediate mesoderm develops into vital parts of the urogenital system (kidneys, gonads and respective tracts). Factors regulating the formation of the intermediate mesoderm are not fully understood.
Transitional epithelium
Transitional epithelium is a type of stratified epithelium. Transitional epithelium is a type of tissue that changes shape in response to stretching (stretchable epithelium). The transitional epithelium usually appears cuboidal when relaxed and squamous when stretched. This tissue consists of multiple layers of epithelial cells which can contract and expand in order to adapt to the degree of distension needed. Transitional epithelium lines the organs of the urinary system and is known here as urothelium (: urothelia).
Colique néphrétique
La colique néphrétique (du νεφρός, néphros, « rein »), désigne des douleurs paroxystiques, violentes, spontanées ou provoquées (secousses) de la fosse lombaire allant vers les organes génitaux. Elle requiert une prise en charge immédiate. La douleur ressentie lors d'une colique néphrétique est réputée comme étant l'une des plus vives décrites en médecine, elle est comparée par des femmes à la douleur d'un accouchement sans péridurale.
Ureteroscopy
Ureteroscopy is an examination of the upper urinary tract, usually performed with a ureteroscope that is passed through the urethra and the bladder, and then directly into the ureter. The procedure is useful in the diagnosis and treatment of disorders such as kidney stones and urothelial carcinoma of the upper urinary tract. Smaller stones in the bladder or lower ureter can be removed in one piece, while bigger ones are usually broken before removal during ureteroscopy.
Tronc (anatomie)
En anatomie humaine, le tronc est la partie moyenne du corps. On le subdivise en trois parties, de haut en bas : le thorax, le segment abdominal (l'abdomen et le dos sous thoracique) et le petit bassin. Le tronc est soutenu par les deux membres inférieurs qui sont reliés par les hanches au petit bassin en bas. Le tronc porte également les deux membres supérieurs au niveau du thorax, de chaque côté au niveau des épaules. Le thorax est également relié en haut à la tête par l'intermédiaire du cou.
Neurogenic bladder dysfunction
Neurogenic bladder dysfunction, or neurogenic bladder, refers to urinary bladder problems due to disease or injury of the central nervous system or peripheral nerves involved in the control of urination. There are multiple types of neurogenic bladder depending on the underlying cause and the symptoms. Symptoms include overactive bladder, urinary urgency, frequency, incontinence or difficulty passing urine.
Excretory system
The excretory system is a passive biological system that removes excess, unnecessary materials from the body fluids of an organism, so as to help maintain internal chemical homeostasis and prevent damage to the body. The dual function of excretory systems is the elimination of the waste products of metabolism and to drain the body of used up and broken down components in a liquid and gaseous state. In humans and other amniotes (mammals, birds and reptiles) most of these substances leave the body as urine and to some degree exhalation, mammals also expel them through sweating.
Laser lithotripsy
Laser lithotripsy is a surgical procedure to remove stones from urinary tract, i.e., kidney, ureter, bladder, or urethra. Laser lithotripsy was invented at the Wellman Center for Photo medicine at Massachusetts General Hospital in the 1980s to remove impacted urinary stones. Optical fibers carry light pulses that pulverize the stone. Candela licensed the technology and released the first commercial laser lithotripsy system. Initially 504 nm dye lasers were used, then holmium lasers were studied in the 1990s.