The adrenal glands are two tiny units of cells which sit on top of each kidney. (healthydirections.ca)
The actual filtering occurs in tiny units inside your kidneys called «nephrons». (healingdaily.com)
A plug - in hybrid model will follow, and while Kia hasn't released much information specific to that version, we expect it to use a larger battery than the standard hybrid's relatively tiny unit. (autobytel.com)