As the nurse is conducting a 6-month well-baby check-up assesses for the presence/absence of the asymmetric tonic neck reflex. At that age, the reflex should have disappeared (around 4 months).
Primitive reflexes are natural, instinctive motor patterns and reactions that emerge throughout fetal development and continue after birth and are essential for an infant's survival. Term newborns progressively incorporate and replace these reflexes with higher-level supporting, defending, and righting postural responses.
This dynamic transfer, which involves motor centers in the brainstem to the cerebral cortex, is a result of growing environmental influences and demands. It is a part of neuropsychomotor organization and development as well as physiological maturity and nervous system fine-tuning.
The involved reflex integration enables a change in the quality of movements, from awkward to more natural, and postural control, as well as acquired, and very well voluntary motor skills and movement patterns against gravity, which in turn affect a child's behavior and learning in his later in life.
Here's another question with an answer similar to this about tonic neck reflex: https://brainly.com/question/13368732
#SPJ4
