IGNOU MFN 1 2015 2016 - | IGNOU Academy

Question

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04 Jan 2018

Answer :

Word Count : 775

(i). Gastric Juice is secreted daily by special secretory glands in the mucosa. It consists of:
1.Water
2.Mineral salts
3.Mucous
4.Hydrochloric acid
5.Intrinsic factor
6.Inactive Enzyme Precursors

Composition of Gastric Juice

The average composition of human gastric juice is as follows:
1)Total Quantity: About 500-600 ml per meal (1200 ml-1500 ml per day).
2)Water: 99.45%.
3)Total Solids: 0.55%.
4)Inorganic: 0.15% (NaCl, KCl, CaCl2, Calcium phosphate, Magnesium phosphate, Bicarbonate, etc.).
5)Organic: 0.40%
i)Mucin,
ii)Intrinsic factor,
iii)Enzymes
a)Pepsin,
b)Other proteolytic enzymes of the gastric juice which are Ca the p sin, Gastric in
c)Gastric renin,
d)Gastric lipase,
e)Other gastric enzymes are present in minute amounts and are Lysozyme, Gelatinase,
6)Nature: Strongly acidic.
7)Free HCl: 0.4-0.5%
8)Total Acidity: 0.45-0.6%, it includes free HCl, as well as HCl combined with proteins.

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