Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Reflex, pressor
Medically reviewed by Min Clinic Staff | Updated: January 2026
Reflex, pressor: A pressor reflex is a neurological (nerve) reflex that constricts arterioles (small blood vessels) and thereby increases the blood pressure.
"Pressor" refers to raising the blood pressure. The word comes from the French "presser" meaning "to exert pressure" or "to squeeze."