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.
The tongue is a muscular hydrostat on the floor of the mouth of most vertebrates that manipulates food for mastication.It is the primary organ of taste (gustation), as much of its upper surface is covered in taste buds.The tongue's upper surface is also covered in numerous lingual papillae.he tongue is a muscular hydrostat on the floor of the mouth of most vertebrates that manipulates food for mastication.