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Gastric glands present in the wall of the stomach do NOT release:
saliva
pepsin
hydrochloric acid
mucus
saliva
Saliva is secreted by the salivary glands (such as the parotid, submandibular, and sublingual glands) located in the oral cavity, NOT by the gastric glands present in the wall of the stomach.
Saliva is secreted by the salivary glands (such as the parotid, submandibular, and sublingual glands) located in the oral cavity, NOT by the gastric glands present in the wall of the stomach.
Expecting the stomach to produce saliva is like expecting a washing machine's water inlet to produce toothpasteтАФeach specialized organ has its own unique glands and functions.
Parietal = Pepsin/Acid, Chief = Pepsinogen, Mucus = Protection; Saliva is separate in the mouth!
PepsinogenHClтАЛPepsin┬а(Active)
The gastric glands in the stomach mucosa contain specific cellsтАФmucus neck cells (secreting mucus), chief or zymogenic cells (secreting proenzyme pepsinogen), and parietal or oxyntic cells (secreting HCl and intrinsic factor). Saliva, containing salivary amylase (ptyalin) and lysozyme, is produced exclusively by salivary glands in the mouth.
Gastric glands are found in the stomach lining and secrete gastric juice containing HCl, pepsinogen, and mucus.
Saliva is secreted by three pairs of major salivary glands (parotid, submandibular, and sublingual) into the oral cavity.
Salivary amylase digests starch in the mouth, whereas pepsin in the stomach digests proteins in an acidic medium.
Understanding human digestive system physiology for competitive exams like RRB, SSC, and NEET.
Clinical diagnostics related to gastric hyperacidity and salivary gland disorders.
Parietal cells also secrete Castle's intrinsic factor which is essential for vitamin B12тАЛ absorption.
Option A (saliva) is correct because saliva is produced in the mouth, not by gastric glands.
A is correct тАФ Saliva is secreted by the salivary glands in the oral cavity, not by the gastric glands of the stomach.
Remember that chemical digestion begins in the mouth with salivary amylase acting on carbohydrates, while protein digestion begins in the stomach via pepsin activated by hydrochloric acid.
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