mesoderm
/ˈmɛsə(ʊ)dəːm
/ /ˈmɛzə(ʊ)dəːm/ /ˈmiːsə(ʊ)dəːm/ /ˈmiːzə(ʊ)dəːm/noun [mass noun] Embryology
The middle layer of cells or tissues of an embryo, or the parts derived from this (e.g. cartilage, muscles, and bone).The stem cells for hematopoiesis in mammals are derived from mesoderm in the yolk sac blood islands and a region of the aorta....
- Teratomas are germ cell tumors composed of various tissue elements representing more than one embryonic layer (ectoderm, mesoderm, and endoderm).
- Structures derived from ectoderm, mesoderm, and endoderm are commonly represented.
Derivatives
mesodermal
- In most polychaetes, the ectodermal and mesodermal derivatives of the growth zone become incorporated into segmental tissues in an anterior-posterior sequence.
- The cells of these paraxial mesodermal cords eventually coalesce into the somites.
- Alternative and related hypotheses include those that deal explicitly with engrailed in mesodermal units, chordate evolution, and terminal posterior addition of iterated elements in development.
Origin
Late 19th century: from meso- 'middle' + Greek derma 'skin'.
- peristrephic panorama
- peristrophe
- peristylar
- peristyle
- peristylium
- perisynovial
- perisystolic
- peritectic
- peritectically
- peritectic point
- peritectic temperature
- peritectoid
- peritectoidally
- peritelevision
- peritendineum
- perithecial
- perithecium
- perithelium
- perithoracic
- peritomy
- peritoneal
- peritoneal cavity
- peritoneal dialysis
- peritoneally
- peritoneoscope