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MindMap Gallery immune organs and tissues

immune organs and tissues

The mind map of immune organs and tissues mainly refers to the mucosa of the digestive tract, respiratory tract and genitourinary tract, the unencapsulated lymphoid tissue scattered under the lamina propria and epithelial cells, as well as some organized lymphoid tissue with germination centers.

Edited at 2023-10-17 20:57:26

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Outline

antigen
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immune organs and tissues

central immune organ primary lymphoid organ

It is the main place for cell generation, differentiation, development and maturation

marrow

Red bone marrow (hematopoietic function)

yellow bone marrow

Function

1. The place where various types of blood cells and immune cells occur

2. Place where B cells and NK cells differentiate and mature.

3. The main site of antibody production in the humoral immune response

Thymus

structure

Thymocytes

Thymic stromal cells

Function

1. The place where T cells develop, differentiate and mature

2. Establishment and maintenance of self-tolerance

peripheral immune organs

Lymph nodes

cortex

Superficial cortical area

Where B cells colonize

deep cortical area

The site where T cells colonize, called the thymus-dependent zone

Postcapillary venules are also called high endothelial venules (HEV)

medulla

Filtration (macrophages)

Function

1. The settlement place of T cells and B cells

T cells account for 75% of the total lymphocytes in lymph nodes, and B cells account for 25%.

2. Immune response site

3. Filtration and purification

4. Participate in lymphocyte recycling

Spleen (solid organ)

The largest peripheral immune organ in the human body

Red pith

It is rich in T cells

white marrow

Mainly contains B cells

Function

1.T and B’s settlement place

2. Immune response site

3. Filtering effect

Filtration removes pathogens

4. Synthesis of certain biologically active mediators

Mucosa-associated lymphoid tissue (MALT) Also known as mucosal immune system MIS

distributed

gut-associated lymphoid tissue

nasal associated lymphoid tissue

bronchial associated lymphoid tissue

M cells, also known as microfold cells, are specialized antigen transport cells

Lymphocyte homing and recycling

definition

Lymphocyte homing refers to the process by which lymphocytes in the blood selectively migrate and settle in certain specific areas of peripheral immune organs or tissues.

Lymphocyte recirculation refers to the process of repeated circulation of lymphocytes between blood, lymph, lymphoid organs or tissues

Mainly refers to the mucosa of the digestive tract, respiratory tract and genitourinary tract Scattered unencapsulated lymphoid tissue beneath the lamina propria and epithelial cells and certain organized lymphoid tissues with germinal centers

It is the place where T cells differentiate, mature and develop

The largest hematopoietic organ in the human body