| Mesenchyme | ||
|---|---|---|
| Latin | mesenchyma | |
| Carnegie stage | 6b | |
| Precursor | primarily mesoderm | |
| Dorlands/Elsevier | m_10/12526276 | |
Mesenchyme refers to loosely organized connective tissue present in the embryo regardless of origin. [1] Viscous in consistency, mesenchyme contains collagen bundles and fibroblasts. Collagen is the main Protein of Connective tissue in Animals and the most abundant protein in Mammals making up about 50% of the whole-body protein A fibroblast is a type of cell that synthesizes and maintains the Extracellular matrix of many Animal tissues Mesenchyme later differentiates into blood vessels, blood-related organs, and connective tissues. The blood vessels are part of the Circulatory system and function to transport Blood throughout the body
Embryonic connective tissue (mesenchyme):
- Consists of loosely-packed, unspecialized cells set in a gelatinous extracellular matrix
- Develops into other types of tissues: connective, bone, cartilage
- Develops into other types of structures and systems: blood cells, endothelial cells, smooth muscle cells, circulatory system, lymphatic system. In Biology, the extracellular matrix ( ECM) is the Extracellular part of animal tissue that usually provides structural support to the cells Tissue is a cellular organizational level intermediate between cells and a complete organism Connective tissue is one of the four types of tissue in traditional classifications (the others being epithelial, Muscle, and Nervous tissue) Bones are rigid organs that form part of the Endoskeleton of Vertebrates They function to move support and protect the various organs of the body produce Cartilage is a type of dense Connective tissue. It is composed of specialized cells called chondrocytes that produce a large amount of extracellular matrix A blood cell (also called blood corpuscle) is any cell of any type normally found in Blood. The endothelium is the thin layer of cells that line the interior surface of Blood vessels forming an interface between circulating Blood in the Smooth muscle is a type of non- Striated muscle, found within the Tunica media layer of large and small Arteries and Veins, the bladder This is an article about the rock music band "Circulatory System" The lymphatic system in Vertebrates is a network of conduits that carry a clear fluid called Lymph.
All organs in the body contain mesenchyme.
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Ectomesenchyme
Ectomesenchyme has similar properties to mesenchyme. The major difference is that ectomesenchyme is usually considered to arise from neural crest cells,[2] which are a critical group of cells that form in the cranial region during early vertebrate development. The neural crest, a transient component of the Ectoderm, is located in between the Neural tube and the epidermis (or the free margins of the Neural folds Thus, ectomesenchyme plays a critical role in the formation of the hard and soft tissues of the head and neck such as bones, muscles and most importantly the branchial arches. In the development of vertebrate animals, the pharyngeal arches (also called branchial arches or gill arches in fish develop during the fourth
See also
References
- ^ Sadler, T. Mesenchymal stem cells or MSCs are Multipotent Stem cells that can differentiate into a variety of cell types W. (2006). Langman's Medical Embryology. Lippincott Williams & Wilkins, pp. Lippincott Williams & Wilkins is an academic and professional medical publisher founded in 1792 and now a part of the Wolters Kluwer group 68-70. ISBN 0-7817-9485-4.
- ^ Weston JA, Yoshida H, Robinson V, Nishikawa S, Fraser ST, Nishikawa S (2004). "Neural crest and the origin of ectomesenchyme: neural fold heterogeneity suggests an alternative hypothesis". Dev. Dyn. 229 (1): 118–30. doi:. A digital object identifier ( DOI) is a permanent identifier given to an Electronic document. PMID 14699583.
External links
The University of Edinburgh (Oilthigh Dhùn Èideann founded in 1582 is a renowned centre for teaching and research in Edinburgh, Scotland, UK.Dictionary
mesenchyme
-noun
- (anatomy) That part of the mesoderm of an embryo that develops into connective tissue, bone, cartilage etc
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