Final answer:
A resident in the supine position is lying face up. The term 'supine' is used in health care to describe someone lying on their back, as opposed to 'prone' which means face down.
Step-by-step explanation:
A resident in the supine position is lying face up. The term supine specifically refers to a body orientation where the person is on their back, which is an important concept in various health-related fields such as medicine, physical therapy, and athletics. In contrast, the prone position means lying face down. This knowledge is often used during physical examinations, diagnostic procedures, or when positioning patients for certain surgical interventions.