The tonic neck reflex, also known as the fencing reflex, is significant because it prohibits the baby from rolling from back to front. This reflex occurs when the baby's head is turned to one side, causing the arm on that side to extend straight out, while the opposite arm bends at the elbow. This reflex helps promote motor development and prevents the baby from accidentally rolling onto their stomach before they have gained enough strength to lift their head and control their movements.
The reflex that is significant in prohibiting a baby from rolling from back to front is the "Landau reflex."
