0
Immune System
This category is for questions about how our bodies identify and fight off disease, infection or pathogens through specialized cells, tissues and organs. The system that does this is called the immune system. It produces antibodies which recognize intruders and neutralizes potentially pathogenic organisms or substances.
4,548 Questions
What blood cells fight pathogens?
White blood cells fight infection while the red blood cells carry blood to your heart.
Are antigens and pathogens the same?
Pathogens are the disease causing agent while antigens are found in the antibodies that fight against the pathogens. So in short, no they aren't the same.
Federal government
Is an epidermal dendrite cell is a specialized phagocyte?
Yes. Epidermal dendritic cells arise from bone marrow and migrate to the epidermis. They are also called Langerhans cells after a German anatomist. These cells ingest foreign substances (phagocytic) and are key activators of our immune system.
Alloimmunization is the process of being alloimmune, immune to foreign antigens from members of the same species.
If lymphocytes wont work what happens?
If your lymphocytes are not functional, you have a seriously compromised immune system. You will be sick a great deal and have to rely on pharmaceuticals to clear infectious diseases; often individuals with non-functional lymphocytes die relatively young due to infectious disease.
How does the immune system of the body compare with the military defense of country?
they work together and fight off EVIL bacteria
They Kill Bacteria
Why are people with weakened immune systems vulnerable to toxoplasmosis?
Because they are more vulnerable to any infection.
What is antigene and antibody?
An antigen is a substance that can invoke an immune response. While an antibody is the immune system's response to an antigen. Antibodies, act by directly neutralizing the antigen and/or bind to the antigen and signaling marcophages to phagocytose the antigen.
What are the body's nonspecific defenses?
Natural immunity. For example: Your skin is a natural immunity. It is non-specific and is a barrier to the outside world.
Your body has various non-specific defenses to pathogens such as bacteria and viruses. But overall the non-specific defense system is made up of skin, epithelial tissue, and mucous membranes which are always "on" and preventing pathogenic attacks so to speak. And then you have preventative measures in your blood and in your body. This is in contrast to specific defenses which attack a certain pathogen and usually need time to activate and get up and running.
The main non-specific defenses consist of:
Lysozymes - such as teardrops which attack bacterial cell walls causing the cell to burst or lyse.
Ciliated Epithelia - which are hairlike fibers that can catch pathogens and dispose of them.
Defensins - which are proteins that have hydro-phobic "R" groups and can interfere with the shape of the bacteria causing it to lyse or disabling it's functionality.
The non-specific defenses in the bloodstream consist of:
Complement - a set of blood proteins that can interfere with a bacterial cell membrane.
Interferon - which is a protein signal released by infected cells which warns other surrounding cells of infection.
Mast Cells - which release histamine that triggers a inflammatory response causing capillaries to dilate and allowing greater circulation of white blood cells and phagocytes to an infected area.
Phagocytes - are white blood cells which detect engulf pathogens and dispose of them.
Natural Killer Cells - which detect viruses and cancer cells and attack them.
What does an increase segs mean?
Neutrophils are known as "segs" and are the body's primary defense against bacterial infection and physiologic stress. An increased neutrophil count may occur with bacterial infections, inflammatory processes, during physical stress, with tissue necrosis that might occur after a severe burn or a myocardial infarction, and granulocytic leukemia.
Are vaccines associated with innate or adaptive immunity?
Adaptive immunity.
Innate immunity provides a very basic general response against pathogens. It responds in the same manner. Adaptive immunity will provide a very specific response as well as retain memory of how to respond next time it encounters the same pathogen. That is the foundation for vaccinations. You introduce to your body in a safe way (destroyed virus) a pathogen that your body can kill so that upon secondary exposure it is well equipped to defend against it.
What is opsonizing immunoglobulin?
this are immunoglobulins that are used for coating certain cells either foreign or self(in autoimmune diseases) and makes those cells more prone to be phagocytised by macrophages,neutrophils or dendritic cells.the main opsonising immunoglobulins are IgG and IgM
A function of the blood that involves circulating antibodies to combat infection?
One of the function of the blood is to circulate antibodies to combat infection.
Phagocytes kill pathogens by engulfing them.
hope that's helped!
An open response question is when they asks you to reflect on a reading passage and then writhe a thoughtful based on what you have read.
Is your immune system the tonsil?
tonsil is the part of immune system.it is a secondary lymphoid organ. it is formed by the aggregation of lymphoid follicles.
What is active immunity antibodies created by?
Type your answer here... the active immunity antibodies is created by what?
Why is the immune system hard to destroy?
There are two reasons why: 1) It changes the DNA and 2) It affects the immune system.
