What reflex is demonstrated when a newborn shows toes stretching outward in response to a sole-of-the-foot touch?

The reflex that is demonstrated when a newborn shows toes stretching outward in response to a touch on the sole of the foot is known as the Babinski reflex. This reflex is a normal response in infants, where the toes fan out when the outer sole of the foot is stroked. This response is a key indicator of neurological function in infants, reflecting the proper development of the nervous system.

In adults and older children, the usual reaction is for the toes to curl inward, which is the opposite response seen in infants. Therefore, the presence of the Babinski reflex in newborns confirms the integrity of their neurological pathways and indicates that their nervous system is functioning typically for their developmental stage. Understanding this reflex helps in recognizing and monitoring the maturation of motor skills and neurological function in developing infants.