Mitosis stagesĮxplanation of the 4 stages of mitosis in order (Phases of Mitosis) It is also the same reason why heart attack following ischemia leads to heart failure because the heart muscles cannot divide to form new ones again. Tissues such as Nerves and cardiac muscles do not divide and this explains why a damaged nerve cannot be repaired again and permanent paralysis of the muscle supplied by the nerve occurs such as in paralysis caused by poliomyelitis.
#Interphase vs prophase skin#
Epithelial tissues such as that of the intestines and that of the skin undergo mitosis within a short period of time (there is rapid cell turnover) this is the reason why an injury to the mouth or skin heals faster than muscles or any other tissue. Some of the body tissues take a longer period of time before the cells divide while others take a shorter time and still others do not even divide at all. The process of mitosis occurs inside the nucleus of dividing cells. Mitosis occurs in almost all cells of the body with the exception of the cardiac tissue and nerve tissues (these two tissues do not undergo mitosis because they remain dormant in the G0 phase of the cell cycle).
![interphase vs prophase interphase vs prophase](http://image.slidesharecdn.com/celldivision-110309080437-phpapp02/95/cell-division-2-728.jpg)
The organisms or human beings grow by the process of mitosis occurring in different parts of the body Mitosis helps in growth: when the fusion of spermatozoon and ovum occurs, they form a zygote which then starts growing to form a human being or a baby of any animal that has many cells (multicellular organisms).The significance of mitosis is to produce cells that are similar in function and structure to replace worn-out cells or damaged cells of the body. Kinetochore: this helps to bind bundles of microtubules called spindle fibers as they extend from the kinetochores to the poles of the spindle during mitosis.Centromeres: Centromeres are needed for the separation of chromatids during mitosis and they are visible as constrictions that serve as sites of attachment of spindle microtubules.Microtubules: Microtubules are support fibers for the movement of chromosomes during mitosis.Chromatids: Chromatids are the strands of replicated chromosomes that become the chromosomes when they contract.It is not as if the parent cell is different from the two daughter cells formed it is as if you cut a single orange to form two equal halves and the equal halves now are called daughter cells. Please note that after mitosis, you have two cells from a single cell. A parent cell is a single cell that will divide itself into two to form the daughter cells. Daughter cells: Daughter cells in mitosis refer to the cells that are formed from the parent cell.Definition of terms used in the explanation of mitosisįor you to easily understand this process, there is a need to explain some terms used in the description of the process. The chromosomes in plant cells behave in a similar manner as the chromosomes of animal cells, even though the plant cells do not contain centrosomes and a new cell wall always forms between the daughter nuclei after nuclear division. The whole process of mitosis can be viewed or observed using a light microscope.
![interphase vs prophase interphase vs prophase](https://pbs.twimg.com/media/DMRwOD9X4AAyp3A.jpg)
The diagrams you are seeing are showing the nucleus and not the cytoplasm of the cell because the process of mitosis occurs in the nucleus of cells that have the ability to divide. The mitosis diagrams shown have been simplified so as to make it easy as the number of chromosomes shown are actually many but have been reduced in the diagrams to four.
![interphase vs prophase interphase vs prophase](https://1.bp.blogspot.com/-b_Xcj0e7K28/WHe7asYFO7I/AAAAAAAAI6k/nnqhrlw_FJA65xGR90lPy7AN2VnCSKs9wCLcB/w1200-h630-p-k-no-nu/Mitosis%2Bvs%2BMeiosis.jpg)
Mitosis, in reality, is a continuous process and it has been divided into steps or stages just to help in understanding it. The process begins with Prophase and ends with Telophase and this is best described using diagrams which are shown below.