the immune system
The stomach (part of the digestive system) has a low pH (acidic), which kills pathogens.
The immune system functions primarily to defend the body against diseases by identifying and neutralizing foreign pathogens such as viruses and bacteria. It consists of specialized cells and tissues that work together to protect the body from infections and maintain overall health.
The immune system
They don't defend pathogens. They defend *against*pathogens. They poison them, they burn them with ozone / hydrogen peroxide / sodium hypochlorite / chorine dioxide, and then they eat them whole if necessary.
Four barriers that protect humans from pathogens include the mucus of the upper respiratory system, the acid mantle of the skin, the stomach acid in the digestive system, and the cervical mucus of the female reproductive system. There are also celular barriers via the immune system that prevent infection.
The function of the immune system is to protect your body from infection by pathogens and foreign invaders, or what the body perceives as invading "germs". Your immune system works to identify pathogens and sometimes other unrecognized cells, like tumor cells, that could cause disease and then to eliminate them from your system. Your body's immune system has an incredibly difficult task in this because some of these pathogens can be "sneaky": they can redesign (mutate) themselves to trick the immune system into misidentifying them as harmless cells rather than appropriately treating them as foreign invaders.
Stomach acid is a chemical barrier against pathogens. The low pH of the acid creates an environment in which pathogens are unable to survive and will often kill them. Mucous is a physical barrier against pathogens. It acts to trap pathogens to prevent them from entering the body any farther.
The lymphatic system transports waste and pathogens away from tissues and helps support the immune system by filtering and removing harmful substances. Lymph fluid contains infection-fighting white blood cells that help defend the body against pathogens. The lymphatic system plays a crucial role in maintaining overall immune support and function.
It is the first line of defense against pathogens.
The system of enzymes that is used to combat pathogens is called the immune system. It helps to identify and neutralize pathogens such as bacteria, viruses, and fungi in the body to protect against infections and diseases.
White blood cells are a critical part of the body's immune system and help to defend against pathogens such as bacteria, viruses, and other harmful invaders. They work by identifying and destroying these pathogens through various mechanisms, including engulfing them, producing antibodies, and coordinating immune responses.