Part of the Peripherals glossary: ATAPI (AT Attachment Packet Interface) is an interface between your computer and attached CD-ROM drives and tape backup drives. Most of today's PC computers use the standard Integrated Drive Electronics (IDE) interface to address hard disk drives.art of the Peripherals glossary: ATAPI (AT Attachment Packet Interface) is an interface between your computer and attached CD-ROM drives and tape backup drives. Most of today's PC computers use the standard Integrated Drive Electronics (IDE) interface to address hard disk drives.
Urine is formed in the kidneys, specifically by the renal tubules in the nephrons of the kidneys. It then is collected by the renal pelvis, where it exits though the ureters, moves to the bladder where it is stored until urination, during which it is expelled through the urethra.
Function: Urine Formation and Excretion. Urine is composed of unwanted substances that have been filtered from the blood by nephrons, the functional units of the kidneys.The urine formed in the kidneys passes through the ureters and is temporarily stored in the bladder.unction: Urine Formation and Excretion. Urine is composed of unwanted substances that have been filtered from the blood by nephrons, the functional units of the kidneys.