Which of the following components of Moro's reflex is the earliest to appear?: (A) Opening of hands, (B) Abduction of upper limbs, (C) Adduction of upper limbs, (D) Movement of trunk
Answer is A. Moro's reflex: Component of Moro's reflex Gestational age of appearance Opening of hands 28 weeks Extension & abduction of upper limbs 32 weeks Anterior flexion of upper limbs 37 weeks