â¢ The cell cycle is a series of events that takes. place from one cell division to the next. â¢ The time is takes to complete a cell cycle is. not the same in all cells.
A neuron is a nerve cell. The brain is made up of approximately 100 billion neurons. Neurons are similar to other cells in the body in some ways such as: Neurons are surrounded by a membrane. Neurons have a nucleus that contains genes. Neurons contain cytoplasm, mitochondria and other organelles.
The cells of the brain include neurons and supportive glial cells. There are more than 86 billion neurons in the brain and a more or less equal number of other cells. Brain activity is made possible by the interconnections of neurons that are linked together to reach their targets.