Match the immunity concepts. a. neutrophil b. effector B cell c. general defense d. immune respo

Match the immunity concepts. a. neutrophil b. effector B...

Key Concepts

Neutrophils

Neutrophils are a type of white blood cell that play a key role in innate immunity by engulfing and destroying pathogens through phagocytosis, and they are one of the first responders to inflammation at the site of infection.

Effector B Cells

Effector B cells are activated B lymphocytes that produce and secrete antibodies specific to antigens, serving as an essential part of the adaptive immune response by neutralizing pathogens.

Innate Immune Defense

The innate immune defense comprises non-specific mechanisms that act as the first line of defense against pathogens, including barriers, phagocytic cells like neutrophils, and the initiation of inflammation.

Adaptive Immune Memory

Adaptive immune memory is the ability of the adaptive immune system to mount a faster and more robust response upon re-encounter with a specific antigen, due to the presence of memory lymphocytes formed during the primary response.

Autoimmunity

Autoimmunity refers to an inappropriate immune response where the body's immune system mistakenly attacks its own cells and tissues, often leading to chronic inflammatory and degenerative diseases.

Antigen Receptors

Antigen receptors, such as B cell receptors, are specialized molecules found on the surface of lymphocytes that specifically bind to particular antigens, triggering cellular activation and tailored immune responses.

Hypersensitivity Reactions

Hypersensitivity reactions are exaggerated or maladaptive immune responses to typically harmless antigens, such as allergens, which can result in severe conditions like anaphylactic shock.

Transcript

00:01 When approaching a matching question, it's a good idea to form your own definitions for each of the terms before looking at the given definitions.

00:10 So we have anaphylactic shock, antibody secretion, phagocyte, immune memory, autoimmuneity, antigen receptor, and inflammation.

00:46 So if we start with anaphylactic shock, this is going to be a heightened response.

00:51 To say an ige antibody.

00:56 It normally doesn't happen when encountering harmless antigens such as peanuts or pollen or say shellfish just in some people they will overreact by overproducing ige and histamine.

01:12 So we'll call this an ige overreaction.

01:19 For antibody secretion the only cells that are going to secrete antibody are b cells.

01:25 These cells are responsible for producing antigen and remembering what antigen they are producing in order to fight a certain pathogen or non -cell protein or antigen.

01:41 For phagocytes, we have neutrophils and we have macrophages.

01:52 Each of these cells is responsible for engulfing antibody and antigen complexes and dissolving them.

02:00 To get rid of the pathogen and antigen source.

02:06 Our immune memory is a response from our b cells to remember what type of antigen they produce in order to produce it faster in say a secondary infection or a re -infection.

02:25 Auto immunity, we can pull this apart.

02:28 Auto meaning self and immunity meaning a self -reaction by immune response.

02:38 Antigen receptor, these are proteins on the outside of our cell membrane that are going to recognize that antigen and cause the response.

02:53 Inflammation is a general response by the immune system.

02:57 It promotes an increase in cytokines and other immune response proteins such as opsonins in order to heighten the immune response.

03:15 Inflammation is typically red and swollen because there's increased blood flow to the site, which means increased white blood cells responding to the antigen or pathogen source.

03:28 So when looking at our answers, we'll start with a.

03:32 So a for neutrophil, of course we look here under our phagocytes or phagocytes, and we have neutrophils as one of our phagocytes to engulf and eat bacteria, and antibody antigen complexes.

03:47 So our best choice for a is phagocyte.

03:51 For b, we have our effector b cells, so we can either look at immune memory or our antibody secretion.

03:59 For effector, we can pull apart the e prefix from the word, meaning out of or from.

04:08 So antibody secretion is a secretion out of or from a b cell...

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