Transverse section of a chick embryo of forty-five hours’ incubation. * Chordamesoderm: yellow, at notochord. * Paraxial mesoderm: red, at somite. * Intermediate mesoderm: purple, near Wolffian duct. * Lateral plate mesoderm: purple, near "Somatic mesoderm" and "Splanchic mesoderm".
Model of human embryo 1.3 mm. long.. (Splanchic mesoderm labeled at left, somatic mesoderm at top right.)
Details
Carnegie stage
9
Precursor
mesoderm
Gives rise to
somatopleure, splanchnopleure
Identifiers
Latin
mesoderma laminae lateralis
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Anatomical terminology
[edit on Wikidata]
Lateral plate mesoderm is a type of mesoderm that is found at the periphery of the embryo.
Contents
1Development
2Serosal mesoderms
3Cavities
4Limb development
5See also
6References
7External links
Development
It will split into two layers, the somatic layer/mesoderm and the splanchnic layer/mesoderm
The somatopleuric layer forms the future body wall.
The splanchnopleuric layer forms the circulatory system.
Spaces within the lateral plate are enclosed and forms the intraembryonic coelom.
It is formed by the secretion of BMP-4 by the ectoderm.[1]
Serosal mesoderms
Lateral plate mesoderm gives rise to the serosal mesoderms.[2]
forms a ventral layer associated with endoderm, the splanchnopleuric mesoderm. This forms the viscera and heart
forms a dorsal layer associated with ectoderm, the somatopleuric mesoderm. This forms the body wall lining and dermis.
Abdominal portion becomes contained in dorsal mesentery, part of the serosal mesoderm.
When the two layers form, a cardiogenic plate is visible. Later, this will form the myocardial primordium, which will contribute to the tubular heart.
Cavities
In the 4th week the coelom divides into pericardial, pleural and peritoneal cavities.[2]
First partition: is the septum transversum.
This will be translocated later into the diaphragm and ventral mesentery.
Divides the coelom into primitive pericardial and peritoneal cavities
Pleuropericardial folds appear on the lateral wall of primitive pericardial cavity, which will eventually cause a partition to form the pericardial and pleural cavities.
Communication between these partitions formed by the pericardioperitoneal canals. However, pleuroperitoneal membranes will grow to fuse with the septum transversum to close off these canals.
At day 22, lung buds form, remaining ensheathed in a splanchnopleuric mesoderm
Limb development
Cells from the lateral plate mesoderm and the myotome migrate to the limb field and proliferate to create the limb bud. The lateral plate cells produce the cartilaginous and skeletal portions of the limb while the myotome cells produce the muscle components. The lateral plate mesodermal cells secrete a fibroblast growth factor (FGF7 and FGF10, presumably) to induce the overlying ectoderm to form an important organizing structure called the apical ectodermal ridge (AER).The AER reciprocatively secretes FGF8 and FGF4 which maintains the FGF10 signal and induces proliferation in the mesoderm.[citation needed] The position of FGF10 expression is regulated by Wnt8c in the hindlimb and Wnt2b in the forelimb. The forelimb and the hindlimb are specified by their position along the anterior/posterior axis and possibly by two T-box containing transcription factors: Tbx5 and Tbx4, respectively.
See also
Limb development for more information
Serous membrane
List of human cell types derived from the germ layers
References
This article incorporates text in the public domain from page 50 of the 20th edition of Gray's Anatomy (1918)
^Tonegawa A, Funayama N, Ueno N, Takahashi Y (1997). "Mesodermal subdivision along the mediolateral axis in chicken controlled by different concentrations of BMP-4". Development. 124 (10): 1975–84. PMID 9169844.
^ abLarsen, William J. (1998). Essentials of human embryology. Edinburgh: Churchill Livingstone. ISBN 0-443-07514-X.
External links
Swiss embryology (from UL, UB, and UF) hdisqueembry/triderm08
v
t
e
Human embryogenesis in the first three weeks
Week 1
Fertilization
Oocyte activation
Zygote
Cleavage
Blastomere
Morula
Blastocoele
Blastocyst
Inner cell mass
Trophoblast
Week 2 (Bilaminar)
Hypoblast
Epiblast
Week 3 (Trilaminar)
Germ layers
Archenteron/Primitive streak
Primitive pit
Primitive knot/Blastopore
Primitive groove
Gastrula
Gastrulation
Regional specification
Embryonic disc
Ectoderm
Surface ectoderm
Neuroectoderm
Somatopleuric mesenchyme
Neurulation
Neural crest
Endoderm
Splanchnopleuric mesenchyme
Mesoderm
Axial mesoderm
Paraxial
Somite
Somitomere
Intermediate
Lateral plate
Intraembryonic coelom
Splanchnopleuric mesenchyme
Somatopleuric mesenchyme
v
t
e
Development of the reproductive system
Precursors
Mesoderm
intermediate
lateral plate
Endoderm
Cloaca
Urogenital sinus
Ectoderm
Cloacal membrane
Internal
Development of the gonads
Gonadal ridge
Pronephric duct
Mesonephric duct
Paramesonephric duct
Vaginal plate
Definitive urogenital sinus
External
Genital tubercle
Labioscrotal swelling
Primordial phallus
Gubernaculum
Peritoneum
Vaginal process
Canal of Nuck
See also
List of related male and female reproductive organs
Prenatal development
Embryogenesis
Anatomy portal
Authority control
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English Journal
Early development of pleuroperitoneal fold of the diaphragm in the rat fetus.
Iwashita N, Sakaue M, Shirai M, Yamamoto M.
The Journal of veterinary medical science. 2018 Jan;80(1)1-7.
The embryonic diaphragm comprises four major structural components derived from the transverse septum, the dorsal foregut mesentery, the pleuroperitoneal folds (PPFs), and the body wall. In this study, the appearance of PPFs and related factors were investigated using light microscopy of horizontal
Pericardial and pericardioperitoneal canal relationships to cardiac function in the white sturgeon (Acipenser transmontanus).
Gregory JA, Graham JB, Cech JJ, Dalton N, Michaels J, Chin Lai N.
Comparative biochemistry and physiology. Part A, Molecular & integrative physiology. 2004 Jun;138(2)203-13.
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Elasmobranch pericardial function. 3. The pericardioperitoneal canal in the horn sharkHeterodontus francisci.
Abel DC, Lowelll WR, Lipke MA.
Fish physiology and biochemistry. 1994 Jul;13(3)263-74.
The pericardial and peritoneal spaces of elasmobranch fishes are connected by the pericardioperitoneal canal (PPC), which allows pericardial fluid to escape when pressures exceed 0.1-0.3 kPA. Using the horn shark (Heterodontus francisci), we tested the hypothesis that the PPC functions to increase c
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