Structures
The thin layer of tissue forming the natural outer covering of the body of a person or animal.
What is skin?
The two round, fleshy masses in the back of your throat.
What are tonsils?
The two main types of phagocytes.
What are neutrophils and macrophages?
Cells that surround and kill microorganisms, ingest foreign material, and remove dead cells.
What are Phagocytes?
This is the first line of defense in the immune system, consisting of barriers like skin and mucous membranes.
What is innate immunity?
The small lumps of tissue that contain white blood cells, which fight infection.
What are lymph nodes?
The fist-sized organ in the upper left abdomen, located behind the stomach and under the ribs.
What is the spleen?
This type of immunity is characterized by the production of antibodies by B cells to fight off pathogens like bacteria and viruses.
What is the humoral immune response?
Cells that surround and kill microorganisms, remove dead cells, and stimulate the action of other immune system cells.
What are Macrophages?
Even when we're _______, our immune system is constantly monitoring the body for potential threats.
What is resting?
Y-shaped proteins produced by the immune system to help neutralize and eliminate foreign substances, like bacteria, viruses, and toxins
What are antibodies?
Molecules or particles that trigger an immune response in the body.
What are antigens?
This type of immune response involves T cells that directly attack infected cells or coordinate the activity of other immune cells.
What is the cell-mediated immune response?
Cells that produce antibodies, direct cell-mediated killing of virus-infected and tumor cells, and regulate the immune response.
What are Lymphocytes?
70% of the immune system is located in the _____, where diverse bacteria is best
What is the gut?
A membrane that lines various cavities in the body of an organism and covers the surface of internal organs.
What are mucous membranes?
Specialized proteins produced by the immune system to recognize and neutralize foreign substances, like viruses and bacteria, that enter the body.
What are antibodies?
This process is the body's natural defense mechanism to injury or infection, characterized by redness, heat, swelling, and pain as immune cells rush to the site of damage.
What is inflammation?
Cells that remember the antigen so your immune system can quickly identify and fight it in the future.
What are Memory B Cells
Cells that mediate a faster and more potent response upon repeat encounter with the antigen.
What are Memory T Cells?
Triggers an immune response by stimulating the production of antibodies or activating specific immune cells.
What are antigens?
Serves as the body's primary physical barrier and also actively participates in the immune system, acting as a crucial defender against pathogens and other threats.
What is skin?
White blood cells "eat" harmful pathogens.
What is phagocytosis?
Cells that activate other immune cells to fight infections when they sense them.
What are Helper T Cells?
These molecules on the surface of cells help the immune system distinguish between self and non-self, playing a crucial role in recognizing pathogens.
What are MHC molecules?