Tensor tympani- The tensor tympani is the larger of the two muscles of the auditory canal, the other being stapedius. The muscle functions to dampen down sounds such as chewing. It arises from the cartilaginous portion of the eustachian tube as well as the adjacent section of the greater wing of the sphenoid bone.
A nonsense mutation in the leptin gene that results in a stop codon and lack of leptin production was first observed in mice in 1950. In the mouse gene, arginine-105 is encoded by CGA and only requires one nucleotide change to create the stop codon TGA.
There are different terms that were used to refer to leptin, including fat hormone, obesity hormone and starvation hormone. Many scientists prefer to refer to it as the starvation hormone because high levels of leptin causes a person have cravings and hunger. Leptin was discovered in the human body in 1994. Therefore, there is no leptin in food even though the term leptin-rich foods is a popular term.