Cardiovascular System - Spleen Development: Difference between revisions
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==Spleen Development Movies== | ==Spleen Development Movies== | ||
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[[File:Lesser sac_01_icon.jpg|200px|link=Quicktime_Development_Animation_-_Lesser_Sac]] | [[File:Lesser sac_01_icon.jpg|200px|link=Quicktime_Development_Animation_-_Lesser_Sac]] | ||
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[[Development_Animation_-_Lesser_Sac|Flash version]] | [[Quicktime Development_Animation_-_Lesser_Sac|Quicktime version]] | [[Development_Animation_-_Lesser_Sac|Flash version]] | [[Quicktime Development_Animation_-_Lesser_Sac|Quicktime version]] | ||
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This cross-sectional view of the abdomen viewed from above, with dorsal (back) top and ventral (front) bottom of animation. | |||
Later the retroperitoneal position of the developing kidneys is also shown either side of the dorsal (thoracic) aorta. | |||
'''Legend''' | |||
* <font color=crimson>'''spleen in mesentery'''</font> | |||
* <font color=palegoldenrod>'''stomach endoderm of gastrointestinal tract'''</font> | |||
* <font color=darkorange>'''liver'''</font> | |||
* <font color=lightpink>'''mesentery'''</font> | |||
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==Human Embryo Stage 22 == | ==Human Embryo Stage 22 == |
Revision as of 08:16, 19 October 2010
Introduction
The spleen is located on the left side of the abdomen and has a role initially in blood and then immune system development. The spleen's haematopoietic function (blood cell formation) is lost with embryo development and lymphoid precursor cells migrate into the developing organ. Vascularization of the spleen arises initially by branches from the dorsal aorta. Mesoderm within the dorsal mesogastrium form a long strip of cells adjacent to the forming stomach above the developing pancreas.
Immune Links: immune | blood | spleen | thymus | lymphatic | lymph node | Antibody | Med Lecture - Lymphatic Structure | Med Practical | Immune Movies | vaccination | bacterial infection | Abnormalities | Category:Immune | ||
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Some Recent Findings
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Development Overview
The human spleen arises in week 5 within the dorsal mesogastrium as proliferating mesenchyme overlying the dorsal pancreatic endoderm. Cells required for its hemopoietic function arise from the yolk sac wall and near dorsal aorta.
The spleen generates both red and white cells in the 2nd trimester. Note that many embryonic RBCs remain nucleated. | |
D4 Dorsal Mesogastrium (stage 13) |
Spleen Development Movies
Spleen Development in Dorsal Mesogastrium |
This cross-sectional view of the abdomen viewed from above, with dorsal (back) top and ventral (front) bottom of animation. Later the retroperitoneal position of the developing kidneys is also shown either side of the dorsal (thoracic) aorta.
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Human Embryo Stage 22
D4 Dorsal Mesogastrium (stage 13)
F1 Developing Human Spleen (stage 22)
F2 Developing Human Spleen (stage 22)
F3 Developing Human Spleen (stage 22)
Abnormalities
Congenital absence of the spleen is usually accompanied by complex cardiac malformations, malposition and maldevelopment of the abdominal organs, and abnormal lobation of the lungs. (from OMIM)
Connexin-43 involved with abnormal spleen development (cardiac and lung also).
References
Reviews
<pubmed>16550197</pubmed> <pubmed>15738953</pubmed> <pubmed>15530642</pubmed> <pubmed>14966753</pubmed> <pubmed>10676919</pubmed> <pubmed>7728201</pubmed>
Search PubMed
Search NCBI Bookshelf: Spleen Development
Search PubMed: Search August 2006 "Spleen Development" 13,401 reference articles of which 450 were reviews.
Search term = Spleen Development
Glossary Links
- Glossary: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | Numbers | Symbols | Term Link
Cite this page: Hill, M.A. (2024, June 16) Embryology Cardiovascular System - Spleen Development. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Cardiovascular_System_-_Spleen_Development
- © Dr Mark Hill 2024, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G