Structures and functions of the human digestive system
Gastritis Atrophic Ménétrier's disease Gastroenteritis Peptic gastric ulcer Cushing ulcer Dieulafoy's lesion Dyspepsia Pyloric stenosis Achlorhydria Gastroparesis Gastroptosis Portal hypertensive gastropathy Gastric antral vascular ectasia Gastric dumping syndrome Gastric volvulus. Giardiasis is a disease of the small intestine caused by a protist parasite Giardia lamblia. A product of this digestion is the pigment bilirubin , which is sent to the liver and secreted in the bile. Both insulin and glucagon are produced by the pancreas. Several herbivorous species, as well as carnivores that prey on sessile animals, have also developed simple jaws, which help to hold the food steady while the radula works on it. The vestibule is the area between the teeth, lips and cheeks,  and the rest is the oral cavity proper.
FFAs free fatty acids. FGF19 fibroblast growth factor FGFR4 fibroblast growth factor receptor 4. FXR farnesoid X receptor.
FXRE farnesoid X receptor response element. GLP-1 glucagon-like peptide 1. GLUT2 glucose transporter type 2. GPCRs G protein-coupled receptors. GSK3 glycogen synthase kinase 3. HDL-C high density lipoprotein cholesterol. I-BABP intestinal bile acid-binding protein. IBD inflammatory bowel disease.
KLF11 Krüppel-like factor KRAS Kirsten rat sarcoma viral oncogene homolog. LBD ligand binding domain. LRH-1 liver receptor homolog MRP2 multidrug resistance-associated protein 2. PEPCK phosphoenol pyruvate carboxykinase. SHP small heterodimer partner. SREBP-1c sterol regulatory element-binding protein 1c. STAT3 signal transducers and activators of transcription 3. When the accessory organs fail to perform their functions completely, the process of digestion may also completely stop.
Necessary Organs Of the digestive system: As stated above, digestive system is the food processing system of human body. The food taken by human beings is digested into simpler molecules that can be absorbed into the blood and utilized for various functions of human body. As the digestive system is the only route of intake of nutrients in normal conditions , therefore necessarily all the nutrient requirements of human body are fulfilled by this system alone.
If the digestive system is impaired for some reason, health of the affected individual will seriously decline. Necessary Organs Oral cavity It is the cavity of mouth, irregular in shape, contains tongue, teeth and salivary glands,.
Muscular, hollow and dialted part of alimentary canal, involved in both mechanical and chemical digestion of food, secretes strong acid and enzymes to aid in digestion of food. Lies between stomach and large intestine, majority of digestion and absorption takes place here, About 5 meters in length. Second-to-last part of alimentary canal, main function is to absorb water from indigestible food.