Excessive Salivation
The orbicularis oris muscle, controlled by the facial nerve, is responsible for closing the mouth and surrounding the lips. It is comparable to the orbicularis oculi muscle, which encircles the eye and closes the eyelid. Commonly referred to as the “kissing muscle,” it is also utilized when playing brass instruments. If this muscle becomes weakened, it can result in excessive salivation or drooling.
Loss of Taste
The chorda tympani, a branch of the facial nerve, is responsible for transmitting taste sensations from the front two-thirds of the tongue to the brain. Additionally, it plays a crucial role in stimulating saliva production. In cases where the facial nerve is compromised, individuals may experience a loss of taste perception for sweet, sour, bitter, salty, and savory flavors. This condition is known as ageusia. Notably, only the front part of the tongue is affected in Bell’s palsy as a separate nerve serves the back portion.