Lymphoid Organs
This primary lymphoid organ produces immune cells, along with the bone marrow:
Thymus
These immune cells produce antibodies.
B cells
This is a foreign molecule that triggers an immune response. They are usually proteins found on the surface of the pathogen.
Antigen
This is the body’s first line of defense and includes skin and mucous membranes.
First line of defense or non specific innate.
This tpye of immunity is the third line of defense and is pathogen-specific.
adaptive immunity
This primary lymphoid organ produces and matures B cells; it is found in bones:
The bone marrow
These immune cells help coordinate the immune response: they attack the trageted pathogen.
T cells
These Y-shaped proteins bind specifically to antigens.
Antibodies
These are examples of chemical non specific barriers:
Acid from the stomach or tears in the eyes.
These cells are responsible for producing antibodies during adaptive immunity.
B cells.
These secondary lymphoid organs filter lymph fluid and trap pathogens.; they the entrance of blody fluids to the lympatic capillaries.
Lymph nodes.
These cells directly kill infected cells when the antibody has marked them.
T cells.
The relationship between an antigen and antibody is often described as this model mentioned by the teacher:
lock-and-key model or puzzle
This second-line response causes redness, swelling, heat, and pain. This is known as:
Inflammation
These cells kill specific pathogens that have attacked the body cells, during the adaptive immune response.
T cells
This organ filters blood and helps fight infections.; it destroys old and damaged cells.
The Spleen.
These large immune cells engulf and digest a wide range (non specific) pathogens.
Macrophages
The specific region of an antibody that binds to an antigen is called this:
antigen-binding site
These white blood cells attack invaders during the second line of defense; this can cause inflammation and fever.
Macrophages.
Vaccines work by exposing the body to this, without causing disease. The types of vaccines are:
weakened or inactive form of a pathogen (antigen), killed pathogen, a toxin or a portion of them.
These tissues in the throat help trap pathogens entering through the mouth and nose; they contain white cells.
Tonsils
These cells form after infection and allow faster response in the future.
Memory cells.
They are the cells that destroys the pathogen, without the mark of an antibody
Macrophages.
This type of immunity responds quickly but is not specific to one pathogen (the answer "non-specific" is not valid)
innate
This is the reason vaccinated individuals respond faster to infection: the body produces _________ cells after an infection or vaccine.
memory cells or immunological memory