Supine: This refers to having the back or dorsal surface downward. A person who is in a supine position is lying face up as opposed to prone. For a more complete listing of terms used in medicine for spatial orientation, please see the entry to "Anatomic Orientation Terms". From Healthy Resources 11 Ways to Treat Your Psoriasis NaturallyFood Dos and Don’ts to Tame InflammationUnderstanding COVID-19 Testing and Treatment Featured Centers What Are the Best PsA Treatments for You?Understanding Biologics 10 Things People With Depression Wish You Knew Health Solutions From Our Sponsors References Jameson, J. Larry, et al. Harrison's Principles of Internal Medicine, 20th Ed. New York: McGraw-Hill Education, 2018.