Stomach Acid in the Small intestine and Esophagus скачать в хорошем качестве

Stomach Acid in the Small intestine and Esophagus

The oesophagus is a long muscular tube that carries food from the mouth to the stomach. Contractions called peristalsis push food down the esophagus. At the bottom of the esophagus, food passes through a muscular valve called the lower esophageal sphincter (LES) into the stomach. This valve acts as a one-way gate, allowing food and liquid to pass from the esophagus into the stomach and preventing stomach contents, including acid, from flowing back up. After the food enters the stomach, the linings of the stomach secrete a highly acidic juice called gastric juice. Stomach acid is incredibly strong. Its pH is around 1.3 to 3.5, about as acidic as battery acid. it comprises digestive enzymes, hydrochloric acid and other substances important for absorbing nutrients – about 3 to 4 litres of gastric juice are produced daily. In such an acidic environment, The lining of the stomach has several clever adaptations to minimize damage and promote self-repair. The stomach lining produces a thick layer of mucus that acts as a physical barrier. This mucus layer separates the stomach acid from the wall, preventing direct contact. Also, Specialized cells in the lining secrete bicarbonate. This bicarbonate helps neutralize some of the stomach acid, creating a slightly less acidic environment near the stomach wall. On the other hand, The stomach cells are constantly undergoing renewal. Stomach epithelial cells have a short lifespan and are regularly replaced by new ones with a new gut lining produced approximately every 3 days. This continuous renewal process helps repair any minor damage caused by stomach acid also, These cells are tightly packed together, forming a sort of seal. These tight junctions prevent stomach acid from seeping in between the cells and damaging deeper layers of the stomach wall. Stomach contractions mix food with gastric juice. This process is known as mechanical digestion. The Female Body and Biology | Biology of Female    • female orgasm | Female anatomy and biology   Hemorrhoids|different types of hemorrhoids    • Hemorrhoids|different types of hemorrhoids...   Virginity and hymen    • Virginity and hymen!can you Confirm a pers...   Fertilization medical animation    • Fertilization|medical animation #sperm   we all won this race!    • Fertilization | 3d medical animation #sper...   What role does sperm structure play in fertilization?    • What Is Sperm?What is sperm made of? medic...   ovulation and menstrual cycle often called period    • ovulation and menstrual cycle often called...   The effect of Tied umbilical cord in twins    • The effect of Tied umbilical cord in twins...   High Blood Pressure Hypertension    • High Blood Pressure|Hypertension|Medical A...   How your body turns food into the poo Human digestion system in human beings    • How does your body turn food into the poop...   food digestion is the story of how your food ends up as a poo 3d medical animation dandelion team    • food digestion the story of how your food ...   coronary angiogram Micro Needle|3d medical animation|sample use only    • coronary angiogram Micro Needle|3d medical...   copyright by Dandelion Team