DIGESTIVE SYSTEM

Did you know that your stomach is a 3-layered muscle? Do you know why?

The acid in your stomach, hydrochloric acid is responsible for killing bacteria that may be present in your food. Your stomach has 3 layers of strong muscle so the acid does not corrode your internal organs.

Fun fact: Did you know the lining of your stomach also turns red when you blush? Adrenaline (a hormone secreted during times of embarrassment) makes the blood vessels dilate, making bodily organs have more blood than normal flowing through them, appearing red.