What is a characteristic position of the tonic neck reflex?

What is a characteristic position of the tonic neck reflex?

• A. Extended arms and legs
• B. Fencing position
• C. Curled up position
• D. Flat on back

Answer: (B)

The tonic neck reflex, also known as the asymmetrical tonic neck reflex (ATNR), is a primitive reflex that appears in infants usually around 2 to 3 months of age. This reflex is characterized by the position of the arms and legs in response to the baby's head turning to one side. When the infant's head is turned to one side, the arm and leg on that side extend while the opposite arm and leg flex. This results in a "fencing position," where one arm extends forward and the opposite leg stretches out, resembling a fencer's stance. This reflex is not present indefinitely; it typically fades as the child develops more voluntary control over movements. The fencing position is a critical aspect of early neuromuscular development and helps babies practice their coordination and awareness of their body in space. Understanding this reflex is important for assessing infant development and identifying potential motor issues as they grow.

The tonic neck reflex, also known as the asymmetrical tonic neck reflex (ATNR), is a primitive reflex that appears in infants usually around 2 to 3 months of age. This reflex is characterized by the position of the arms and legs in response to the baby's head turning to one side. When the infant's head is turned to one side, the arm and leg on that side extend while the opposite arm and leg flex. This results in a "fencing position," where one arm extends forward and the opposite leg stretches out, resembling a fencer's stance.

This reflex is not present indefinitely; it typically fades as the child develops more voluntary control over movements. The fencing position is a critical aspect of early neuromuscular development and helps babies practice their coordination and awareness of their body in space. Understanding this reflex is important for assessing infant development and identifying potential motor issues as they grow.