The main function of Nissl bodies within neurons is to aid in the production and dispersal of chemical substances such as proteins and peptides, as illustrated by Richard F. Thompson in his book "The Brain: A Neuroscience Primer." The structure of Nissl bodies makes them particularly adept at protein synthesis, an essential cellular process within a neuron.Know More
The structure of Nissl bodies consists of a granular and concentrated section of the endoplasmic reticulum. The Nissl substance that creates the bodies is made up of RNA, proteins, lipids and acid polysaccharides that aid in the creation of proteins. It is believed that the majority of proteins created by Nissl bodies are used intercellularly.
Since Nissl bodies are found only in the soma and dendrites of a neuron and do not appear in the axon, the proteins they create are likely carried to the axon by axontransmitters. Nissl bodies are essential to the well-being of a neuron; a decrease in the number of Nissl bodies in a neuron indicates neural degeneration.
These structures change abruptly in the case of inflammatory disease, oxygen deprivation or trauma to the nervous system. They are named after the German scientist, F. Nissl, who first developed the technique of staining and identifying the structures with methylene blue.Learn more about Nerves
Multipolar neurons are neurons that have one axon and many dendrites. These dendrites or multi-processes give the neuron many connection points to other neurons. Multipolar neurons function as either motor or association neurons, which includes moving muscles and conducting impulses.Full Answer >
According to Neurogenetics at the University of Tennessee Health Science Center, the human body has 95 to 100 billion neurons or nerve cells. The brain alone has at least 85 billion of these cells, although estimates go as high as 1 trillion.Full Answer >
The function of the thalamus is to regulate the body's voluntary motor control, consciousness and its sleep/wake cycle. It also regulates the senses of sight, sound, taste, touch and the sense of where the person's body is in space. The thalamus decides which signals from the ears, eyes, mouth and skin to relay to its area in the cerebral cortex. The thalamus doesn't relay information about the sense of smell.Full Answer >
The cerebrum, also called the cerebral cortex, is the portion of the brain that deals with thought processes and movement. There are four lobes to the cerebrum each associated with different processes. The right side is the creative side whereas the left provide the logic function of the brain.Full Answer >