What does multinucleate mean?
having more than two nuclei
Definition of multinucleated : having more than two nuclei a multinucleated macrophage multinucleated muscle fibers — compare binucleate, uninucleate.
Which human body cells are multinucleate?
A multinucleated cell is a unique form which is frequently observed in the normal tissue. Skeletal muscle is composed of bundles of multinucleate muscle fibers [1]. Osteoclasts induce multinucleation by the cell fusion of mononuclear cells to cover a large area for bone resorption [2].
Why would a cell be multinucleated?
For example, if a cell cycle becomes unregulated, like during cancer or a viral infection, a cell may not divide properly and end up with two or more nuclei. An argument can be made that a schizont, a human liver cell infected with many rapidly replicating malaria parasites, has multiple nuclei.
What is a syncytium and Coenocyte?
A coenocyte (English: /ˈsiːnəsaɪt/) is a multinucleate cell which can result from multiple nuclear divisions without their accompanying cytokinesis, in contrast to a syncytium, which results from cellular aggregation followed by dissolution of the cell membranes inside the mass.
Which muscle tissue is multinucleate?
Skeletal muscle fibers
Skeletal muscle fibers are cylindrical, multinucleated, striated, and under voluntary control.
What are examples of multinucleated cells?
Organisms that show multinucleate stage are fungi, e.g. coenocytic hyphae of Rhizopus, plasmodium of slime mould, skeletal muscle cells and osteoclasts in mammals are also multinucleate. Paramoecium (ciliated unicellular protozoan) contains one macronucleus and one or more micronucleus.
How could such multinucleated cells be explained?
Certain cell types normally have several nuclei per cell. How could such multinucleated cells be explained? The cell underwent repeated mitosis, but cytokinesis did not occur. In a diploid cell with 5 chromosome pairs (2n = 10), how many sister chromatids will be found in a nucleus at prophase of mitosis?
Are cardiac cells multinucleated?
Skeletal muscle cells are multinucleated from the fusion of muscle cells. Smooth muscle cells are strictly mononucleated, and cardiac muscle cells are mononucleated in humans. However, cardiac muscle cells are functionally syncytium.
What is the meaning of coenocyte?
Definition of coenocyte 1a : a multinucleate mass of protoplasm resulting from repeated nuclear division unaccompanied by cell fission. b : an organism consisting of such a structure.
What is syncytial cell?
Syncytia are evolutionarily conserved cellular structures form by the multiple cell fusions of uninuclear cells. In mammals, the best example of physiological syncytia is muscle fibers, which contain thousands of fused muscle cells to allows their rapid coordinated contraction [7].
What is the difference between coenocytic and septate hyphae?
Hyphae that have walls between the cells are called septate hyphae; hyphae that lack walls and cell membranes between the cells are called nonseptate or coenocytic hyphae), As hyphae continue to grow, they form a tangled network called a mycelium.
What is the meaning of polynuclear?
Definition of polynuclear. : chemically polycyclic especially with respect to the benzene ring —used chiefly of aromatic hydrocarbons that are important as pollutants and possibly as carcinogens.
What is a multinucleate cell?
Multinucleate cells ( multinucleated or polynuclear cells) are eukaryotic cells that have more than one nucleus per cell, i.e., multiple nuclei share one common cytoplasm. Mitosis in multinucleate cells can occur either in a coordinated, synchronous manner where all nuclei divide simultaneously or asynchronously…
Are polymorphonuclear leukocytes polynuclear cells?
The polymorphonuclear leukocytes of mammals are not polynuclear cells, although the lobes of their nuclei are so deeply bifurcated that they can appear so under non-optimal microscopy.
What is the difference between mast cells and polynuclear cells?
In triacid preparations the granulation is unstained, and the mast cells appear as clear, polynuclear cells, free from granules. In contradistinction to the polynuclear neutrophil elements, these mononuclear forms shew no amœboid movement on the warm stage.