Digestive enzymes in saliva begin to dissolve food into base chemicals that are washed over the papillae and detected as tastes by the taste buds. The tongue is covered with thousands of small bumps called papillae, which are visible to the naked eye. Within each papilla are hundreds of taste buds. The exception to this are the filiform papillae that do not contain taste buds. There are between 2000 and 5000 taste buds that are located on the back and front of the tongue. Others are located on the roof, sides and back of the mouth, and in the throat. Each taste bud contains 50 to 100 taste receptor cells. The five specific tastes received by taste receptors are saltiness, sweetness, bitterness, sourness, and savoriness, often known by its Japanese name "umami" which translates to ‘deliciousness’. As of the early 20th century, Western physiologists and psychologists believed there were four basic tastes: sweetness, sourness, saltiness, and bitterness. The concept of a "savory" taste was not present in Western science at that time, but was postulated in Japanese research. By the end of the 20th century, the concept of umami was becoming familiar to Western society. One study found that both salt and sour taste mechanisms detect, in different ways, the presence of sodium chloride (salt) in the mouth. However, acids are also detected and perceived as sour. The detection of salt is important to many organisms, but specifically mammals, as it serves a critical role in ion and water homeostasis in the body.
Aluminosis (also known as aluminium lung) is a restrictive lung disease caused by exposure to aluminum-bearing dust. Aluminosis is a form of pneumoconiosis that can lead to pulmonary fibrosis. First cases of lung damage from aluminium exposure were reported in 1930s in Germany. It can be detected by using high-resolution computed tomography. Findings may vary, showing nodular or slightly irregular opacities that may merge into more prominent forms, most frequently in the upper lung fields, sometimes in the lower lung fields, and less frequently a diffuse micro nodular pattern. In severe cases, pulmonary fibrosis with honeycombing was described.Workers exposed to aluminium dust are often involved in industries such as explosives manufacturing (where aluminium powder is involved), aluminium welding (and grinding), and bauxite smelting. References
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https://icdlist.com/icd-10/J63.0