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When reiko touched her newborn's lips, he produced an automatic response called the sucking reflex.

What is sucking reflex?

  • These reflexes are uncontrollable motions that might occur on their own or in reaction to other actions.
  • For instance, the sucking reaction occurs when a baby's mouth roof is touched.
  • When this area is stimulated, the baby will start sucking, which aids in nursing or bottle feeding.
  • One of the most crucial reactions your newborn has is undoubtedly the reflex to sucking.
  • It goes hand in hand with the rooting reflex, which is when a baby looks for a food source.
  • The sucking reflex enables him to suck and swallow the milk when he discovers it.
  • The infant will begin sucking when the roof of the mouth is touched.
  • Beginning at the 32nd week of pregnancy, this response takes around 36 weeks to fully develop.
  • Because of this, premature babies may have a poor or undeveloped sucking ability.

Learn more about sucking reflex here:

https://brainly.com/question/1370117

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