The basic functioning unit of the kidney is called the nephron. The kidneys together comprise greater than 2 million nephrons, and each is capable of forming urine. The nephrons function is to clean the blood of unwanted substances as it flows past.
disk drive. n. Computers. A hardware device that reads data stored on a disk and writes data onto the disk for storage. disk drive. n. (Computer Science) computing the controller and mechanism for reading and writing data on computer disks. See also disk2.
The C drive typically refers to the computer hard drive, and subsequent letters are assigned for each installed drive. Various organizations, such as colleges and universities, may use a system of networked storage, in which the drives are labeled similarly.