Lymphatic/Immune System Basics
This clear fluid circulates in the lymphatic system.
What is lymph?
These white blood cells are the body‘s main defense against infection.
What are leukocytes?
An overactive immune system can mistakenly attack the body, causing these types of diseases.
What are autoimmune diseases?
The first line of defense prevents most pathogens from entering the body?
What is the skin?
This everyday activity helps flush out toxins through the lymphatic system.
What is exercise?
These small, bean-shaped structures filter lymph and help fight infections
What are lymph nodes?
This type of cell is produced in the bone marrow, produces antibodies to fight specific antigens or becomes a memory cell to "remember" the antigen.
What are B cells (B lymphocyte)?
HIV attacks and weakens this type of immune system cells.
What are CD4+ cells?
The immune system has two main parts: the innate immune system and this other that remembers past infections.
What is the adaptive immune system?
The lymphatic system doesn’t have a pump like the circulatory system. Instead, it moves lymph using these.
What are muscle contractions?
The first line of defense is the largest organ of the body that along with tears, earwax, mucous membranes, stomach acids, and natural floras helps prevent harmful pathogens from entering the body.
What is the skin?
These immune system cells engulf and digest harmful invaders.
What are macrophages?
This condition occurs when the lymphatic system doesn’t properly drain fluids, leading to swelling.
What is lymphedema?
Vaccines help the immune system by introducing this harmless form of a pathogen.
What is an antigen?
Some immune system cells are named after this part of the body because they were first found there.
What is the thymus (T cells)?
This organ, located in the upper left abdomen, filters blood and helps fight infections.
What is the spleen?
This cell releases histamine in connective tissue in response to allergens.
What are mast cells?
This condition occurs when the lymphatic system doesn’t properly drain fluids, leading to swelling.
What is lymphedema?
This is the process where immune cells learn to distinguish between the body’s own cells and foreign invaders.
What is self vs. non-self recognition?
This is the largest lymphatic organ in the body.
What is the spleen?
This response to antigens immediately produces antibodies (immunoglobulins) designed to fight a specific antigen.
What is humoral response?
HIV attacks and weakens this type of immune system cells; when the number drops to <200, it progresses to AIDS.
What is CD4+ (cells)?
This blood cancer is characterized by a swollen lymph node in the neck and the presence of swollen Reed-Stenberg cells.
What is Hodgkin's lymphoma?