Nerve Tissue: Structure of Peripheral Nerves and Brain

by Geoffrey Meyer, PhD

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    In this lecture, I would like to cover the structure of peripheral nerves and the brain. At the end of the lecture, I would like to have some understanding of the structure of the peripheral nerve, of the basic histology of two very important components of the brain. I am going to describe how nerve cells are supported by glial cells and also how the brain and spinal cord is protected by meninges. The main function of the nervous system is communication and we have special sensory neurons that receive information from the periphery, from our internal organs and send their information into the brain to be processed. We have motor neurons that send information to our skeletal muscles and our smooth muscles to allow us to move individuals and for some about internal organs to change in dimension and, therefore, alter their function. All these important occurrences have happened as a result of the neurons in the nervous system. Let us now look at the structure of a peripheral nerve. Here is a diagram showing you a section through the spinal cord. The spinal cord is in the middle of the diagram. It has two components. One is colored yellow that is the outer white matter and the internal butterfly or H-shaped structure is called the gray matter. Concentrate on the gray matter. It has two components. It has a ventral horn and a dorsal horn on either side. The ventral horn contains the cell body of a motor neuron that is going to pass out through the ventral root and form the spinal nerve. In the dorsal horn, and in the dorsal root, are axons projecting into the central nervous system from sensory neurons. And the cell body of these sensory neurons are located in the dorsal root...

    About the Lecture

    The lecture Nerve Tissue: Structure of Peripheral Nerves and Brain by Geoffrey Meyer, PhD is from the course Nerve Tissue. It contains the following chapters:

    • Nervous system: Structure of Peripheral nerves and brain
    • The structure of a peripheral nerve
    • Myelinated and unmyelinated axons
    • Neuroglial cells
    • The brain
    • The meninges

    Author of lecture Nerve Tissue: Structure of Peripheral Nerves and Brain

     Geoffrey Meyer, PhD

    Geoffrey Meyer, PhD

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