What Mechanical Engineers Do. Mechanical engineers develop and build mechanical devices for use in industrial processes. Mechanical engineering is one of the broadest engineering disciplines. Mechanical engineers research, design, develop, build, and test mechanical and thermal sensors and devices, including tools, engines, and machines.
Each tissue is with metabolic enzymes to release energy. Red blood cells do not have mitochondria . They get energy through glycolysis. Tissues like muscles have mitochondria . When muscles need energy mitochondria through mitochondria release more energy. Liver is the primary organ of metabolism. In liver carbohydrates, lipids and amino acids are metabolized. All tissues other than liver can metabolism carbohydrates fat and amino acids.
Here we will mention only the role of the kidneys in calcitriol metabolism. Final activation of vitamin D to the active hormone calcitriol takes place in the kidneys â 1-hydroxylation of 25- hydroxycholecalciferol to 1,25- dihydroxycholecalciferol. Calcitriol stimulates the small intestine for protein synthesis allowing absorption of Ca2+ and phosphates.