Tag Archives: Nervous system

SLEEPING BUILDS BRAIN CELLS


Sleeping Builds Brain Cells

Why do we need to sleep? Obviously, without it we are tired, irritable, and unable to think and function as effectively as we otherwise could, but why is this? What are the underlying biological processes that drive this need? Scientists have long been grappling with this topic, and recent research has yielded some pretty interesting findings. During sleep, the production ofnervous system cells that generate myelin, a substance that insulates the nerves and permits the rapid transmission of nerve impulses, doubles in mice. This suggests that sleep may serve certain reparative and growth functions in the brain. More… Discuss

 

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Today’s Birthday (July 7,): Camillo Golgi (1843)


Camillo Golgi (1843)

An Italian physician and cytologist, Golgi devised a way to stain nerve tissue and, using the technique, was able to clearly observe a neuron, now called a Golgi cell, along with its axon and dendrites branching off. The discovery led to the identification of the neuron as the basic structural unit of the nervous system. He also discovered the Golgi tendon organ and the Golgi apparatus. He shared the 1906 Nobel Prize with Santiago Ramón y Cajal. What discovery did Golgi make about malaria? More… Discuss

Article of the Day (June 30): Neurogenesis


Neurogenesis

The human nervous system is composed of some 200 billion cells called neurons, about half of which are found in the brain. Neurogenesis, the process through which neurons are formed, is most active during prenatal development. Though early neuroanatomists believed that the adult nervous system is fixed and incapable of regeneration, neurogenesis actually continues throughout life. Studies have shown that lack of sleep reduces neurogenesis and exercise increases it. How is it affected by stress? How physical exercise help the aging body and the brain?More… Discuss

Mercury toxicity to the nervous system


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Happy Reading 🙂

-G.