The complement system is a series of about 20 proteins that are involved in a cascade effect during an immune response. Complement is generally divided up into 3 pathways: classical, lectin, alternate. The classical pathway involves a complement protein binding to an antigen-antibody complex (and thus its role in adaptive immunity). Whereas in the alternate pathway, complement (C3) binds directly to the foreign cell( usaully bacteria). Thus its repsonse is non specific and therefore is also part of the innate imune system.
Dendritic cells present antigen fragments on there MCH II complex to T helper cells.
yes
The adaptive immune system is activated if the innate immune system is unable to control the infection.
No, the first line of the immune system is the intact skin, mucous membranes and their secretions, normal microbiota all are physical barriers.
This is generally referred to as the Immune System, which can be further split into the Innate and Adaptive Immune System
Humans have both an "innate" and an "adaptive" immune system. There are a number of proteins circulating in the blood as part of the complement system that belongs to the innate immune system (although the adaptive system can activate it as well). Normally, the complement proteins are inactive. When the immune system detects some threat, the complement system is triggered and the circulating proteins are chemically split into smaller components. C3 convertases are chemicals that cleave C3 complement into breakdown products in both the "classical" and the "alternative" pathways of the complement system.
no
An adaptive immune system is a series of specialized, systemic cells and processes which remove or counter pathogenic growth.
The innate immunes system does not produce any antibodies. Cells of the innate immune system are macrophages, granulocytes (neutrophils, basophils, eusinophils), natural killer cells...
Also. Allied the innate immune system, cells and proteins involved recognize structures shared by classes of microbes not present on the body's own cells and can also recognize molecules released by infected, damaged, or dead cells. The innate system can eliminate microbes on its own but more commonly cells of the innate immune system release chemokines to attract cells that are involved in the adaptive immune system to initiate an antigen or microbe specific immune response
Mucous is an innate immunity, it is a powerful early defense mechanism and highly effective physical barriers against microorganisms. Mucous can be found in respiratory tract, gastrointestinal tract, and genitourinary tract.
Acquired Immune System or Adaptive immune System
tissues
The adaptive immune system was developed in higher vertebrates to combat pathogens and antigens. These can include viruses, bacteria, and anything else that can cause the immune system to launch an immune response.