**Question:** False regarding Chorda Tympani nerve

A. Chorda Tympani nerve is a sensory nerve that carries taste information from the anterior two-thirds of the tongue to the brain.
B. Chorda Tympani nerve plays a crucial role in the sensation of sour taste.
C. Chorda Tympani nerve is responsible for transmitting information about bitter taste only.
D. Chorda Tympani nerve is a mixed nerve carrying both sensory and motor functions.

**Correct Answer:** C. Chorda Tympani nerve is responsible for transmitting information about bitter taste only.

**Core Concept:** Chorda Tympani nerve is a sensory nerve that carries taste information from the anterior two-thirds of the tongue to the brain. This nerve is part of the anterior part of the lingual nerve, which is a branch of the seventh cranial nerve (also known as the facial nerve).

**Why the Correct Answer is Right:** Chorda Tympani nerve is primarily involved in transmitting taste information from the anterior two-thirds of the tongue. In particular, it is responsible for transmitting information about bitter taste, but not sour, sweet, salty, or umami tastes.

**Why Each Wrong Option is Incorrect:**

A. Inaccurate as Chorda Tympani nerve is a sensory nerve carrying taste information from the anterior two-thirds of the tongue, not solely responsible for sour taste.
B. False, Chorda Tympani nerve transmits taste information for bitter, not sour taste.
D. Incorrect, Chorda Tympani nerve is a sensory nerve carrying taste information from the anterior two-thirds of the tongue, not carrying motor functions.

**Clinical Pearl:** Understanding the specific taste information carried by Chorda Tympani nerve helps in interpreting taste deficits or dysfunctions. For example, if a patient experiences a loss of bitter taste sensation, it might indicate damage to the Chorda Tympani nerve. However, if the patient has a loss of all taste sensations, it may suggest broader issues affecting the entire tongue or other taste nerves.