Cell Growth and Multiplication
The individual cells have the capacity to grow. They do this by acquiring
various substances from the blood and converting them into appropriate cellular
Sometimes, a tissue such as muscle tissue will increase in mass without an
increase in the number of units. This condition is called hypertrophy.
If an increase in tissue mass results from a greater number of cells, we refer to this a
Cell multiplication is accomplished through a process called mitosis.
In mitosis, the genetic material of the cell is doubled. Then, the cell divides into two halves.
One-half of the genetic material goes into each of the two daughter cells. In this
manner, the two new cells each have the same genetic composition as the original cell.
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