Lymphatic System
This fluid originates as interstitial fluid and enters lymphatic capillaries
What is lymph?
This is the bodys first line of defense
What are skin and mucous membranes?
These are the most abundant white blood cells and first responders
What are neutrophils?
This immunity develops after exposure and involves lymphocytes
What is adaptive immunity?
What are antigens?
These vessels have valves and transport lymph through the body.
What are lymphatic vessels?
This includes inflammation and fever after pathogens enter the body
What is the second line of defense?
These cells engulf pathogens and present antigens.
What are macrophages (or dendritic cells)?
These cells produce antibodies
What are B cells?
These cells display antigens to T cells
What are antigen-presenting cells?
What is the thoracic duct?
These receptors recognize motifs (patterned molecular structures) on pathogens
What are pattern recognition receptors?
These cells release histamine in allergic/ inflammatory responses.
What are basophils (mast cells)?
This type of immunity involves T cells killing infected cells.
What is cell mediated immunity?
This molecule presents antigen to cytotoxic T cells
What is MHC Class 1?
These structures filter lymph and initate immune response.
What are lymph nodes?
These proteins interfere with viral replication
What are interferons?
These cells attack parasites and are involved in allergies.
What are eosinophils?
This type involves antibodies circulating in body fluids
What is humoral immunity?
This molecule presents antigen to helper T cells
What is MHC Class 2?
These structures include red bone marrow, thymus, spleen, and tonsils.
What are lymphoid structures?
This protein system enhances pathogen destruction and works with antibodies
What is the complement system?
These cells kill infected or abnormal cells without prior exposure.
What are natural killer (NK) cells?
This is the key advantage of adaptive immunity
What is immunological memory?
These are misfolded proteins that cause neurodegenerative diseases.
What are prions?