Reflex which is not present in a child at bih is?
**Core Concept**
The question is testing the knowledge of reflexes present in neonates at birth. Reflexes are essential for the assessment of neurological development in infants. The absence or presence of certain reflexes can indicate various neurological conditions.
**Why the Correct Answer is Right**
The Asymmetrical Tonic Neck Reflex (ATNR) is typically present in infants born at term, but it usually disappears around 4-6 months of age. However, it is not present in children at birth. The ATNR is characterized by the extension of the arm and leg on the same side as the stimulated ear, while the opposite arm and leg are flexed. This reflex is mediated by the vestibular system and is essential for the integration of sensory information.
**Why Each Wrong Option is Incorrect**
* **Option A:** The Moro reflex is a neonatal reflex that is present at birth and is characterized by the infant's arms and legs flailing outward when the infant feels as if they are falling. This reflex is essential for the infant's ability to respond to changes in their environment.
* **Option B:** The Rooting reflex is another neonatal reflex that is present at birth, which helps the infant to turn their head towards a nipple or other object placed in their mouth. This reflex is essential for the infant's ability to feed.
* **Option C:** The Grasping reflex is a neonatal reflex that is present at birth, which helps the infant to grasp objects placed in their hand. This reflex is essential for the infant's ability to interact with their environment.
**Clinical Pearl / High-Yield Fact**
Remember that reflexes are essential for the assessment of neurological development in infants. The presence or absence of certain reflexes can indicate various neurological conditions, and it is essential to evaluate reflexes in infants from birth to 6 months of age.
**Correct Answer: C. The Grasping reflex is present in children at birth.**