parachute reaction

Protective abduction of arms, extension of elbows and wrists and spreading of fingers, a normal defence reflex, elicited when an infant is held in ventral suspension and is tilted abruptly forward toward the floor, seen in the 8th–12th month of age, a response that is asymmetrical in infants with hemiparesis and is an early sign of cerebral palsy
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

parachute reaction

Anterior propping reaction Pediatrics Protective abduction of arms, extension of elbows and wrists and spreading of fingers, a normal defense reflex, elicited when an infant is held in ventral suspension and is tilted abruptly forward toward the floor, seen in 7–9th months of age, a response that is asymmetrical in infants with hemiparesis and an early sign of cerebral palsy.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
"If there is no immediate reserve parachute reaction, the jumper will maintain his good tight body position and hold on the left carrying handle and immediately punch the MIRPS pack tray on the right side with a closed fist.