The nature of a convergent boundary depends on the type of plates that are colliding. Where a dense oceanic plate collides with a less-dense continental plate, the oceanic plate is typically thrust underneath because of the greater buoyancy of the continental lithosphere, forming a subduction zone.
Medical Definition of URINAL. 1. : a vessel so constructed that it can be used for urination by a bedridden patient. 2. : a container worn by a person with urinary incontinence.
The urethra is the passageway between the bladder and the external part of the body, which allows urine to be excreted from the body.he urethra also connects the to the ductus deferens in males, for the ejaculation of sperm. There is a sphincter at the upper end of the urethra, which serves to close the passage and keep the urine inside the bladder.