The exact cause of blood cancer is not known. Some types of blood cancer are due to spontaneous (not inherited) mutations in the genes that control production of specific types of blood cells. Immunocompromised people and people with autoimmune diseases have an increased risk of developing certain types of blood cancer.
The 1973 discovery of lingual lipase, which is secreted by lingual serous glands and hydrolyzes medium-and long-chain triglycerides in the stomach, has renewed interest in the gastric phase of fat digestion.he 1973 discovery of lingual lipase, which is secreted by lingual serous glands and hydrolyzes medium-and long-chain triglycerides in the stomach, has renewed interest in the gastric phase of fat digestion.
The pancreas and gland cells of the small intestine secrete digestive enzymes that chemically break down complex food molecules into simpler ones. These enzymes include trypsin (for protein digestion), amylase (for carbohydrate digestion), and lipase (for lipid digestion).he teeth aid in mechanical digestion by masticating (chewing) food. Mastication permits easier deglutition (swallowing) and faster chemical breakdown in the digestive tract. During mastication, salivary glands secrete saliva to soften the food into a bolus (semi-solid lump).