Fungiform papilla
Encyclopedia
The fungiform papillae are mushroom shaped papillae (projections) on the tongue
Tongue
The tongue is a muscular hydrostat on the floors of the mouths of most vertebrates which manipulates food for mastication. It is the primary organ of taste , as much of the upper surface of the tongue is covered in papillae and taste buds. It is sensitive and kept moist by saliva, and is richly...

. They are located on the top (dorsal) surface of the tongue, scattered throughout the filiform papilla
Filiform papilla
The filiform papillae are one of the four types of lingual papillae, small prominences on the surface of the tongue. The filiform papillae are thin, long "V"-shaped cones that don't contain taste buds but are the most numerous, covering most of the dorsum...

 but mainly at the tip and lateral margins of the tongue. They have taste bud
Taste bud
Taste buds contain the receptors for taste. They are located around the small structures on the upper surface of the tongue, soft palate, upper esophagus and epiglottis, which are called papillae. These structures are involved in detecting the five elements of taste perception: salty, sour,...

s on their superior (upper) surface which can distinguish the five tastes: sweet, sour, bitter, salty
Salty
Salty may refer to the following:* salt* Saltiness, one of the five basic tastes* salt * salience* LondonerFictional characters:* Salty the Seal, character in Disney's Pluto cartoons...

, and umami
Umami
Umami , popularly referred to as savoriness, is one of the five basic tastes together with sweet, sour, bitter, and salty.-Etymology:Umami is a loanword from the Japanese meaning "pleasant savory taste". This particular writing was chosen by Professor Kikunae Ikeda from umai "delicious" and mi ...

. They have a core of connective tissue
Connective tissue
"Connective tissue" is a fibrous tissue. It is one of the four traditional classes of tissues . Connective Tissue is found throughout the body.In fact the whole framework of the skeleton and the different specialized connective tissues from the crown of the head to the toes determine the form of...

. They are innervated by the seventh cranial nerve, more specifically via the submandibular ganglion
Submandibular ganglion
The submandibular ganglion is part of the human autonomic nervous system. It is one of four parasympathetic ganglia of the head and neck...

, chorda tympani
Chorda tympani
The chorda tympani is a nerve that branches from the facial nerve inside the facial canal, just before the facial nerve exits the skull via the Stylomastoid foramen...

, and geniculate ganglion
Geniculate ganglion
The geniculate ganglion is an L-shaped collection of fibers and sensory neurons of the facial nerve located in the facial canal of the head...

 ascending to the solitary nucleus
Solitary nucleus
The solitary tract and nucleus are structures in the brainstem that carry and receive visceral sensation and taste from the facial , glossopharyngeal and vagus cranial nerves.-Anatomy:...

 (the sensory component of the Vagus nerve
Vagus nerve
The vagus nerve , also called pneumogastric nerve or cranial nerve X, is the tenth of twelve paired cranial nerves...

 in the brainstem).

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