Dictionary > Metamyelocyte

Metamyelocyte

Definition
noun, plural: metamyelocytes
A cell derived from myelocyte and develops into a band cell during granulopoiesis
Supplement
A metamyelocyte is a cell in granulopoiesis (i.e. a hematopoiesis of granulocytes). Hematopoiesis is a process of forming new cellular elements, particularly red blood cells, macrophages, dendritic cells, lymphocytes, megakaryocytes, platelets, and granulocytes. The granulocytes include neutrophils, eosinophils, and basophils. In the granulocytic series, a metamyelocyte is a blood cell that transitions from a myelocyte to a band cell. In particular, the developmental stages are as follows: hemocytoblast → common myeloid progenitor (or CFU-GEMM) → CFU-GM → CFU-G → myeloblast → promyelocyte → myelocyte → metamyelocyteband cellgranulocyte.
The myelocyte develops into a metamyelocyte. The latter is characterized by the appearance of a bent nucleus. Similar to a myelocyte, the metamyelocyte does not have a visible nucleolus under a light microscope. Unlike myelocyte, a metamyelocyte does not synthesize DNA and is no longer dividing. Its size ranges from 12 to 18 μ.
Since there are three types of myelocytes: neutrophilic, basophilic, and eosinophilic, the metamyelocyte also have the corresponding types.
Word origin: meta- (“from”) + myelocyte
Synonym(s):

  • juvenile cell

See also:

  • common myeloid progenitor cell
  • myelocyte
  • band cell
  • hematopoiesis
  • granulopoiesis
  • Related term(s):

    • metamyelocytic (adjective, of, pertaining to, or relating to a metamyelocyte)


    You will also like...

    Gene Regulation in Eukaryotes
    Gene Regulation in Eukaryotes

    Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....

    New Zealand Flora & Fauna
    Ecology & Biodiversity: New Zealand Flora & Fauna

    New Zealand is known for its unique biodiversity, caused by its remarkable geography and geologic history. Breaking away..

    Non-Mendelian Inheritance
    Non-Mendelian Inheritance

    In this tutorial, find out more about certain types of inheritance that does not follow the Mendelian inheritance patter..

    Lake Wakatipu, New Zealand
    New Zealand’s Unique Geographical History

    Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..

    Mātauranga Māori and Science Collaboration
    Mātauranga Māori and Science

    Mātauranga Māori is the living knowledge system of the indigenous people of New Zealand, including the relationships t..

    Still Water Community Plants
    Still Water Community Plants

    This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..