There are three ways for industrial poisons to enter the human body.

Ways of industrial poisons entering human body: digestive tract, skin and respiratory tract. Among them, it is the most common and dangerous way for industrial poisons to enter the human body through respiratory tract, the most important way for industrial poisons to enter the human body through skin, and the chances for industrial poisons to enter the human body through digestive tract are less.

I. Digestive tract

It is a common lifestyle poisoning, such as toxic food, sedative and hypnotic drugs, etc. , often poisoned by oral intake. Poison is rarely absorbed by oral cavity and esophageal mucosa, and hydride is less absorbed in stomach, mainly absorbed by small intestine. After the action of intestinal juice and enzymes, the toxicity is partially changed, and then it enters the blood circulation, and the liver is detoxified and distributed to the tissues and organs of the whole body.

Second, the respiratory tract

Due to the large surface area of alveoli and abundant pulmonary capillaries, poisons inhaled through the respiratory tract can quickly enter the blood circulation and cause poisoning.

Third, the skin mucosa.

There is a lipid-like substance on the surface of healthy skin, which can prevent water-soluble poisons from invading the body. A few fat-soluble poisons are easily absorbed by sebaceous glands after skin contact, and poisons that can damage the skin can also be absorbed by the skin and poisoned.