Changes

==Introduction==

==Introduction==

<p>Mucosal associated lymphoid tissue (MALT) covers lymphoid tissues associated with the mucosal surfaces of [[Alimentary - Anatomy & Physiology|alimentary]], [[Cardiorespiratory System - Anatomy & Physiology|respiratory]], [[Urinary System - Anatomy & Physiology|urinary]] and [[Reproductive System - Anatomy & Physiology|reproductive]] tracts. Due to the extent of these surfaces the mucosal lymphoid tissue contains as many [[Lymphocytes - Introduction|lymphocytes]] as the rest of body. The MALT is strategically located to intercept pathogens before they enter the body.</p>

<p>Mucosal associated lymphoid tissue (MALT) covers lymphoid tissues associated with the mucosal surfaces of [[Alimentary System Overview - Anatomy & Physiology|alimentary]], [[Cardiorespiratory System Overview - Anatomy & Physiology|respiratory]], [[Urinary System Overview - Anatomy & Physiology|urinary]] and reproductive tracts. Due to the extent of these surfaces the mucosal lymphoid tissue contains as many [[Lymphocytes - Introduction|lymphocytes]] as the rest of body. The MALT is strategically located to intercept pathogens before they enter the body.</p>

==Development==

==Development==

<p>[[Lymphocytes#γδ cells|γδ T cells]] migrate to these tissues during foetal development from the [[Thymus - Anatomy & Physiology|thymus]].</p>

<p>[[Lymphocytes#γδ cells|γδ T cells]] migrate to these tissues during foetal development from the [[Thymus - Anatomy & Physiology|thymus]].</p>

**Including the [[Peyer's Patches - Anatomy & Physiology|Peyer’s patches]], [[Tonsils - Anatomy & Physiology|tonsils]], [[Appendix - Anatomy & Physiology|appendix]], and lymphoid follicles in [[Large Intestine - Anatomy & Physiology|large intestine]] and [[Rectum - Anatomy & Physiology|rectum]]

**Including the [[Peyer's Patches - Anatomy & Physiology|Peyer’s patches]], [[Tonsils - Anatomy & Physiology|tonsils]], [[Appendix - Anatomy & Physiology|appendix]], and lymphoid follicles in [[Large Intestine - Anatomy & Physiology|large intestine]] and [[Rectum - Anatomy & Physiology|rectum]]

*Bronchial associated lymphoid tissue (BALT)

*Bronchial associated lymphoid tissue (BALT)

**Located at the [[Bronchi and bronchioles - Anatomy & Physiology|bronchial]] bifurcations under non-ciliated epithelium

**Located at the [[Bronchi and Bronchioles - Anatomy & Physiology|bronchial]] bifurcations under non-ciliated epithelium

Lymphatic nodules are present in the mucosal surfaces and are more readily defined than other more diffuse lymphoid tissue of the MALT but are still not encapsulated. They exist with small primary nodule or generally as secondary nodules containing germinal centres. The nodules are generally found in the [[Tonsils - Anatomy & Physiology|tonsils]], [[Peyer's Patches - Anatomy & Physiology|Peyer’s patches]] and [[Appendix - Anatomy & Physiology|appendix]] and become enlarged when responding to an antigen.</p>

Lymphatic nodules are present in the mucosal surfaces and are more readily defined than other more diffuse lymphoid tissue of the MALT but are still not encapsulated. They exist with small primary nodule or generally as secondary nodules containing germinal centres. The nodules are generally found in the [[Tonsils - Anatomy & Physiology|tonsils]], [[Peyer's Patches - Anatomy & Physiology|Peyer’s patches]] and [[Appendix - Anatomy & Physiology|appendix]] and become enlarged when responding to an antigen.</p>

==Functions==

==Functions==

*[[Tonsils - Anatomy & Physiology|Tonsils]]

*[[Tonsils - Anatomy & Physiology|Tonsils]]

[[Category:Mucosal Associated Lymphoid Tissue|A]]

[[Category:Mucosal Associated Lymphoid Tissue|A]]