Are brain cells finite, and how many brain cells do people have

The human brain has hundreds of billions of cells, some of which are dormant, and about 1 in 1 is involved in the neurological activities of the brain. The number of cells active in each person's brain determines how smart and memorable each person is. The so-called active cells refer to one nerve cell and another nerve cell composed of"Nerve bonds"With the memory of the information repository, human beings have language, writing, inventions, consciousness, emotion, thinking and other advanced neural activities, and human brain cells are non-renewable.

The human brain has about 12 billion brain cells, and at most less than 10% are fully developed and regularly used, and the rest are still in a primitive state that is not fully developed or completely undeveloped.

There are 12 billion to 14 billion brain cells, but only 3%-7% of the brain of a normal person is developed, and the rest are dormant and do not participate in cranial nerve activity.

INTERVIEWER What's going on in your brain?

Your brain is an incredible thing. It is one of the most complex structures in the known universe, and scientists have been studying it for decades to find out what it is made of and how it acts.

The brain is circuitry and chemical circuits, and nerve cells or neurons are its constituent parts. Each of them has a cell body that contains its genetic code, an axon that transmits electrical impulses, and a dendrites that receive electrical impulses. They are connected together at junctions called synapses.

When the impulse arrives, the synaptic vesicles are released, which transmit information. Through this pattern, each neuron makes thousands of connections, producing complex patterns that drive human thought.

There are hundreds of different types of neurons in the brain, which are classified according to their unique structure and function, and are being discovered all the time. But they can't do it alone. They are supported by a network of glial cells – similar to "glue".

There are three main types of glial cells. Oligodendrocytes have adipose branches, which wrap around the conductive axons of nerve cells, like a plastic coating on a wire. This provides insulation. Prevents signal crossover and speeds up the transmission of signals through the chain.

Microglia are part of the immune system that, like internal clean-ups, tracks pathogens and removes debris from the brain.

Then there are the astrocytes, which have long, thin arms that reach between nerve cells and blood vessels, allowing nutrients to shuttle. Clean up waste products and even participate in the transmission of chemical signals.

- How many cells are there in the brain?

It's hard to know how many cells there are in the brain. Individual neurons have branching trees of long, thin axons and dendrites that cross with their neighbors to form tangled clumps that are almost impossible to examine with precision. One of the most frequently cited estimates is 100 billion neurons, in which the number of supporting glial cells is three to ten times higher, but the latest research shows that these numbers are actually wrong, and using a new cell counting technique, scientists have come up with different numbers.

Each cell has a nucleus that can be stained to make it easy to discern whether they belong to neurons or glia.

Instead of counting them under a microscope, the researchers turned on the cells and turned them into "soup" so they could quickly remove them through a machine. Using this technology, they found that the number of glial cells was close to 6 billion, far less than expected.

Book Info: Inside Your Brain October 2019, Editor-Ben Biggs, published by Future Publishing Limited.

Translation: elin

Brain cells are a general term for the many types of cells that make up the brain. Brain cells mainly include neurons and glial cells. Neurons are responsible for processing and storing information related to brain function.

Neurons are specific, a cell type with an electrical function. Neurons are connected to each other by synapses.

Glial cells play a supportive role, and their main known functions include the formation of myelin sheaths outside the axons of neurons, neuronal nutrients** and metabolism, and involvement in signal transduction in the brain. Other cell types in the brain include epithelial cells that form blood vessels in the brain.

Chinese name brain cell.

The foreign name is brain cells

Definition: A general term for the various cells that make up the brain.

Includes neurons and glial cells.

Features make up complex neural networks.

Cells refer to some cells in the brain, which are composed of many types. Brain cells are just one of the general classifications, brain cells have the ability to store relevant information about the outside world to support the normal operation of the body, general brain cells are divided into glial brain cells, neurons and other types, targeting and neurons are important work to control and be responsible for processing external information storage.

If divided according to the structure, brain cells can be divided into two categories: eukaryotic cells and prokaryotic cells, among which prokaryotic cells do not have the structure of organelles and nucleus, and the overall structure is relatively simple, but eukaryotic cells are the opposite, the structure is more complex, and the cytoplasm and cell membrane of the nucleus are its most basic components.