Dictionary > Mononuclear leukocyte

Mononuclear leukocyte

Definition
noun, plural: mononuclear leukocytes
A leukocyte characterized by having a nucleus with only one lobe, as opposed to the other type with a nucleus with several lobes
Supplement
Leukocytes (also called white blood cells) are cells of the immune system and one of the cellular elements in blood. Unlike red blood cells, the leukocytes lack the hemoglobin pigment. Similar to red blood cells though, the leukocytes came from a hematopoietic stem cell (hemocytoblast). The hemocytoblast gives rise to progenitor cells of both the myeloid series and the lymphoid series. Leukocytes from the myeloid series include the granulocytes and the monocytes whereas those from the lymphoid series include the lymphocytes and the lymphoid dendritic cells. Based on the nuclear lobes, the leukocytes may be classified as polymorphonuclear (i.e. a nucleus with more than one lobe) or mononuclear (i.e. a nucleus with only one lobe).
The mononuclear leukocytes are those possessing a large nucleus with only one lobe. In contrast, polymorphonuclear leukocytes, such as granulocytes, are those with a nucleus that has more than one lobe. The mononuclear leukocytes include the mature lymphocytes and monocytes. They are transported by the blood to the body’s extravascular space.
Variant(s):

  • mononuclear leucocyte

Compare:

  • polymorphonuclear leukocyte
  • See also:


    You will also like...

    green leaf - close up view
    Leaves

    Leaves are the major photosynthetic organ of a plant. Apart from that, they are also crucial to water movement. In this ..

    Homeostatic Mechanisms and Cellular Communication
    Homeostatic Mechanisms and Cellular Communication

    Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

    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..

    Body temperature regulation by the hypothalamus
    Temperature Regulation in Animals

    This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..

    Growth and Plant Hormones
    Growth and Plant Hormones

    Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..

    Chemical composition of the body
    Chemical Composition of the Body

    The body is comprised of different elements with hydrogen, oxygen, carbon, and nitrogen as the major four. This tutorial..