What is the reflex called when a newborn fans out their toes when the sole of their foot is touched?

• A. Grasp Reflex
• B. Babinski Reflex
• C. Moro Reflex
• D. Sucking Reflex

Answer: (B)

The reflex observed when a newborn fans out their toes upon stimulation of the sole of their foot is known as the Babinski Reflex. This response is a normal part of infant development and is often tested by healthcare professionals shortly after birth. The Babinski Reflex is significant because it reflects the neurological development of the child, specifically the functioning of the central nervous system.

In infants, this reflex demonstrates the immaturity of the nervous system, as it is typically present in babies up to about 2 years of age. As the nervous system matures, the response becomes less pronounced and is replaced by a different foot response where the toes curl downwards. This transition helps indicate developmental milestones in motor function and neurological health. The response itself shows how newborns react to stimuli, which is an essential aspect of assessing their reflexes and overall development.