GENERAL HISTOLOGY

OESOPHAGUS STOMACH

PARTS OF STOMACH

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Hydrochloric acid is a chemical that can burn your skin-and yet it exists in your stomach. How can this be?
A
Your small intestines absorb all the hydrochloric acid
B
The food in your stomach absorbs all the acid
C
Your stomach lining protects you against burns
D
The hydrochloric acid in your stomach is different from the hydrochloric acid you would find in a chemistry lab
Explanation: 

Detailed explanation-1: -Cells in your stomach called parietal cells produce this acid and secrete it into your stomach to help break down food. Even though hydrochloric acid can cause severe burns to your skin, your stomach is protected by a protective mucus layer produced by the cells that line your stomach.

Detailed explanation-2: -In the stomach several mucosal defence mechanisms protect the stomach against hydrochloric acid and noxious agents. The pre-epithelial protection is made up by the mucus-bicarbonate barrier. Mucus and bicarbonate, secreted by mucus cells, create a pH gradient maintaining the epithelial cell surface at near neutral pH.

Detailed explanation-3: -The hydrochloric acid in the gastric juice breaks down the food and the digestive enzymes split up the proteins. The acidic gastric juice also kills bacteria.

Detailed explanation-4: -Skin exposure to low concentrations of hydrogen chloride gas or hydrochloric acid causes erythema and inflammation of the skin whereas high concentrations can cause severe chemical burns to the skin and mucous membranes.

Detailed explanation-5: -Stomach acid’s important roles for our health The acidity neutralises harmful pathogens like yeast and bacteria that enter the body in food.

There is 1 question to complete.