Gastric Juice

Gastric Juice

Composition and functions of gastric juice
Answer:

Composition Of Gastric Juice:

1. Water-99.5%
2. Solids -0.5%

“Understanding gastric juice through FAQs: Composition, functions, and uses explained”

1. 1. Organic substances
      1. Enzymes
         • Pepsin – helps to digest proteins
         • Renin-curdles milk
         • Gastric lipase – splits fats
         • Gelatinase-digests gelatin
         • Urease-converts urea to ammonia
         • Carbonic anhydrase – present in small amount
         • Lysozyme-bacteriocidal
      2. Mucus
         Forms:
         • Soluble vehicle for HCl and enzymes
         • Insoluble – protects gastric mucosa to form HCI
      3. Intrinsic factor
         • Helps in absorption of vit B12
   2. Inorganic substances
      1. Hydrochloric acid

“Importance of studying gastric juice for medical students: Questions explained”

Functions Of Gastric Juice:

1. Digestive function

1. Pepsin
   • Digest proteins and converts it into proteases, peptones and polypetides
   • It causes curdling and digestion of milk
2. Gastric lipase
   • Hydrolyses fats into fatty acid and glycolysis
3. Gelatinase
   • Digests gelatine
4. Gastric amylase – degrades starch

“Common challenges in mastering gastric juice notes effectively: FAQs provided”

2. Haemopoietic function

• Gastric juice contains intrinsic factor of castle which is essential for absorption of Vit B₁₂
• Vitamin B₁₂ is one of the maturation factor of erythropoeisis

3. Protective function

• Gastric juice contains mucus which
• Protects stomach wall from irritation
• Prevents digestive action of pepsin on the stomach wall
• Protects gastric mucosa from hydrochloric acid

“Factors influencing success with gastric juice studies: Q&A”

4. Functions of hydrochloric acid

• Activates pepsinogen into pepsin
• Bacteriolytic action
• Provides acidic media for hormones

Hydrochloric acid in gastric juice