Diagram of enzyme and secretion through digestion

By the late 17th and early 18th centuries, the digestion of meat by stomach secretions and the conversion of starch to sugars by plant extracts and saliva were known but the mechanisms by which these

occurred had not been identified. French chemist Anselme Payen was the first to discover an enzyme, diastase, in 1833. A few decades later, when studying the fermentation of sugar to alcohol by Gastric acid production is regulated by both the autonomic nervous system and several hormones.The parasympathetic nervous system, via the vagus nerve, and the hormone gastrin stimulate the parietal cell to produce gastric acid, both directly acting on parietal cells and indirectly, through the stimulation of the secretion of the hormone histamine from enterochromaffine-like cells (ECL). The digestive system uses 3 main processes to move and mix food: Swallowing.Swallowing is the process of using smooth and skeletal muscles in the mouth, tongue, and pharynx to push food out of the mouth, through the pharynx, and into the esophagus. The stomach, gallbladder, and pancreas are three of the most important digestive organs in the human body. These organs work together to produce and store

… In a nutshell, digestion involves breaking down large food molecules into water-soluble molecules that can be passed into the blood and transported to the body's organs. 2 S.N.S Bile - Secreted by hepatocytes - Transported through the biliary system - Stored and concentrated in the gallbladder - Released into duodenum after ingestion Impact of alg3 gene deletion on

growth, development, pigment production, protein secretion, and functions of recombinant Trichoderma reesei cellobiohydrolases in Aspergillus niger The digestive system is made up of organs that help in the digestion and absorption of food. The process starts in the mouth and ends in the anus. Clinical Relevance – Chronic Granulomatous Disease (CGD) This is a group of inherited diseases caused by a NADPH oxidase deficiency. NADPH

oxidase is a key enzyme required to produce reactive oxygen species, particularly the superoxide radical. Forced Breathing. Forced breathing requires active inspiratory and expiratory effort with the help of accessory muscles. Forced inhalation. This is similar to normal inspiration (diaphragm and external intercostals) but requires effort from the inspiratory accessory muscles such as scalenes, sternocleidomastoid,

pectoralis major and minor, serratus anterior and latissimus dorsi.

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