The human senses are described in several verses in the Upaniṣads; most of these verses say that there are eleven senses, known as indriya, but some verses take the number of senses up to fourteen. The five principle senses of perception are known as buddhindriyani or jnanendriyani, because they are used to control the buddhi or higher intelligence: eyes, ears, nose, tongue, and skin. Then there are the five senses of karma or action, known as karmendriyani: larynx, hand, foot, and organs of elimination and generation. The eleventh sense is the manas or mind, which serves as the bridge between the other senses and the atman or soul. The three more senses that are mentioned in some of the verses are the inner senses, which are known as the antarindriyani: manas, buddhi, ahamkara (ego), and chitta (consciousness). In each individual, the operation of the eleven to fourteen senses (indriya) is managed by a particular deity.