You're in the supine position - lying on the back with the face up or on the dorsal surface. It's the opposite of the prone position, which is lying on the chest with the face down.
During surgery, there are various types of positions in which the patient may be positioned and the supine position is the most commonly used.
This is used for procedures of the anterior body such as:
abdominal
thoracic
facial
anterior upper and lower extremity procedures
Here are the steps to bring patients to supine position.