What is vibrissae?

Vibrissae refer to the long, sensitive whiskers found on certain mammals, such as cats, dogs, and some rodents. These specialized hairs serve a critical tactile sensory function, allowing animals to detect changes in their environment, navigate in the dark, and sense nearby objects without relying on their vision. Vibrissae are deeply embedded in the skin and are rich in nerve endings, making them highly responsive to touch. This adaptation is essential for the survival of many species, as it enhances their ability to interact with their surroundings effectively.

The other options do not accurately describe vibrissae. Ears do not provide the tactile sensory feedback that vibrissae do; instead, they serve primarily for sound detection. The mouth and teeth are also unrelated to the tactile capabilities offered by whiskers. Therefore, the choice that defines vibrissae correctly is the one that identifies them as long whiskers for tactile sensory functions.