An 8 month old female has history of kernicterus. On sudden movement of the baby’s neck, the following features were seen abduction and extension of the arms, opening of hands and adduction of arms in front of the body. Which reflex is elicited in this infant?

**Core Concept**
Kernicterus is a condition caused by severe jaundice in newborns, leading to brain damage and subsequent neurological impairments. This scenario presents a classic case of a neurological reflex elicited in an infant with kernicterus.

**Why the Correct Answer is Right**
The described reflex is a manifestation of the **Tonic Labyrinthine Reflex (TLR)**, also known as the **Tonic Neck Reflex (TNR)**. When the baby's neck is suddenly moved, the TLR is elicited, resulting in the characteristic response of abduction and extension of the arms, opening of the hands, and adduction of the arms in front of the body. This reflex is a primitive response that helps maintain balance and posture.

**Why Each Wrong Option is Incorrect**
* **Option A:** The **Moro Reflex** is also a primitive reflex but is elicited by a different stimulus (e.g., loud noise, sudden movement). It results in a different response (e.g., abduction of the arms, flexion of the elbows).
* **Option B:** The **Grasping Reflex** is a reflex that involves the infant's hands closing around an object, but it is not related to the described response.
* **Option C:** The **Plantar Reflex** is a reflex that involves the toes, not the arms.

**Clinical Pearl / High-Yield Fact**
It is essential to recognize and understand primitive reflexes in infants, as their presence or absence can indicate neurological impairments or developmental delays.

**Correct Answer:** C. Tonic Labyrinthine Reflex (TLR)

✓ Correct Answer: A. Moro’s reflex