Whiskers or vibrissae are a type of mammalian hair that are typically characterised, anatomically, by their large size, large and well-innervated hair follicle and by having an identifiable representation in the somatosensory cortex of the brain.
The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.
Hair is a protein filament that grows from follicles found in the dermis, or skin.
A hair follicle is a mammalian skin organ that produces hair.
They are specialised for tactile sensing.
The somatosensory system is a complex system of nerve cells that responds to changes to the surface or internal state of the body.
Vibrissae grow in various places on most mammals, including all primates except humans.
Mammals are any vertebrates within the class Mammalia, a clade of endothermic amniotes distinguished from reptiles and birds by the possession of a neocortex, hair, three middle ear bones and mammary glands.
In medicine, the term vibrissae also refers to the thick hairs found inside human nostrils.
A nostril is one of the two channels of the nose, from the point where they bifurcate to the external opening.