.Immune system-complex set of defenses to protect the body from pathogens in by students on the
B.First-line defenses-resist pathogens
1. Unbroken skin is a barrier that prevents many pathogens from entering the body.
2. The respiratory system traps pathogens with cilia and mucus.
3. The digestive system uses saliva, enzymes, hydrochloric acid, and mucus to kill bacteria.
4. The circulatory system contains white blood cells that patrol the body and destroy pathogens.
5. Damaged or diseased tissue becomes inflamed, attracting certain white blood cells to light bacteria.
C. Specific immunity-the immune system works against a specific antigen by producing an antibody.
1. In active immunity the body makes its own antibodies in response to an antigen.
a. Some antibodies remain in the bloodstream to tight later infections of the same pathogen.
b. Vaccinationprovides a form of an antigen to provide active immunity.
2. Passive immunity-results when antibodies produced in another animal are introduced into the body
a. Passive immunity does not last as Ion as active immunity.
Skin is the smooth external coat or covering for vertebrates. It is engaged in protecting the body from pathogens that causes illness.
neutrophil and monocytes
tyrese
white blood cell defends the body against disease.
The immune system is the body system that defends against infection and disease by identifying and fighting off harmful pathogens such as bacteria, viruses, and other pathogens. It consists of a network of cells, tissues, and organs that work together to protect the body.
The immune system is a network of cells tissues organs and chemicals that fight pathogens. This is how the body keeps healthy and defends against invading illnesses.
The body defends itself against disease through the immune system, which includes various types of immune cells like white blood cells and antibodies. These cells recognize and eliminate foreign invaders such as bacteria, viruses, and fungi to protect the body from infections. The immune system also produces memory cells that help to remember and respond faster to previously encountered pathogens.
good hygene
antibodes, white blood cells
Pathogens can cause disease in the human body by invading tissues, releasing toxins, and triggering an immune response that can damage healthy cells and tissues.
If it can be harmful, it can be referred to as pathogen.
your body produces antigens to fight against the pathogens and imune you agaist diseases.