the immunes system i found out of my teacher
The immune system needs to destroy the pathogens. Other wise the pathogens will multiply in the body of host. The pathogens will multiply by geometrical proportion. With in very short time the pathogens will occupy the whole body. You can no longer survive in that case.
Once the body activated, killer T cells it recognize pathogen and destroy them. In response that will create memory B cells and T cells specific to a certain pathogen, so if it ever came back it will be killed immediately.
In medicine, the locus where a pathogen can enter would be any part of the body or surface that is moist. This includes the eyes, the nose and the mouth.
When the human body mobilizes its defenses against a pathogen, it recognizes the pathogen by identifying specific molecules on its surface called antigens. The immune system then mounts a response by producing antibodies that target and neutralize the pathogen, as well as activating immune cells to attack and destroy the pathogen. This orchestrated immune response is crucial for fighting off infections and maintaining health.
cilia prevents the entrance into the body by pathogen by constantly beat toward the outside of the body. If it is in your throat it will beat it toward your stomach so stomach acid can destroy the pathogen.
The substance introduced into the body to stimulate the production of chemicals that destroy specific disease-causing viruses and organisms is called a vaccine. Vaccines work by exposing the immune system to a harmless component of the pathogen, prompting the body to generate an immune response and "memory" cells. This prepares the immune system to recognize and combat the actual pathogen if encountered in the future, thereby providing immunity.
Infection allows the pathogen to enter human cells. Without infection plasmodium or any other pathogen can not enter the cells.
The viruses that cause the flu enter your body through the mucous tissue in your mouth, nose, eyes, respiratory system, and gastrointestinal system. The influenza viruses mostly affect the respiratory system when you are infected.
An antigen is a body's system for creating antibodies to fight infection. A pathogen is an infectious agent (or germ).
During the second exposure to a pathogen, the immune system can mount a quicker and more targeted response due to immunological memory. This is because the immune system has already encountered the pathogen before and has memory cells ready to recognize and respond more efficiently to the pathogen. This results in a faster and more effective clearance of the pathogen from the body.
A disease producing organism is a pathogen. An invasion of the body by a pathogen is an infection. Although an infection is a generalized name for the body's response to any invasion by any pathogen.
When the body encounters a pathogen for the first time, the innate immune system responds immediately through physical barriers like skin and mucous membranes, and through immune cells such as macrophages and neutrophils that engulf and destroy invaders. Simultaneously, the adaptive immune system begins to activate, involving T cells that recognize and attack infected cells, and B cells that produce specific antibodies to neutralize the pathogen. This initial response may take several days to develop, during which the body learns to recognize the pathogen for future encounters. Once the pathogen is eliminated, memory cells are formed to provide a faster and more effective response if the same pathogen is encountered again.