In 1862 English explorer John Hanning Speke journeyed from Africaâs east coast to find what he considered to be the source, where the river exits Lake Victoria in present-day Uganda.
Nerve Pain. Common types of nerve pain you may experience in the mouth can come from your taste and sensory nerves (burning mouth syndrome), inferior alveolar nerve located in the lower jaw, skin of the chin and lower lip, or in your lingual nerve, which descends to the tongue and under the mucous membrane of the mouth.erve Pain. Common types of nerve pain you may experience in the mouth can come from your taste and sensory nerves (burning mouth syndrome), inferior alveolar nerve located in the lower jaw, skin of the chin and lower lip, or in your lingual nerve, which descends to the tongue and under the mucous membrane of the mouth.
There are two cranial nerves that innervate the tongue and are used for taste: the facial nerve (cranial nerve VII) and the glossopharyngeal nerve (cranial nerve IX).nswers. Best Answer: There are five primary tastants: sweet, sour, salt, bitter, and umami, which is the taste of the amino acid glutamate, a major ingredient of monosodium glutamate (MSG).