Neuron

Neurons are the cells specialized to receive, conduct, and transmit signal to the nervous system. The development of neurons starts early during the embryogenesis. After the fusion of sperm and egg, zygote is formed which is further divided to form blastula eventually leading to gastrula stage of development. Gastrulation begins as invagination of cells in the embryo leading to the formation of three germ layers. Formation of notochord from the mesodermal layer marks the beginning of neurulation. The ectodermal layer above the notochord gives rise to the vertebral nervous system as the tissue thickens and flattens to become the neural plate which folds to form the neural groove ultimately this folding leads to the formation of neural tube.…

A lot of what makes us up as people consists of neurons. Neurons are responsible for our bodies “communication system.” So much happens within our bodies at such a minuscule amount of time, and learning about the process made me realize how much needs to happen for me to feel a certain way or perform a certain action. In a neuron, it first has to have a certain amount of depolarizing ions for there to be an action potential. When that action potential is reached, charge can be sent through the…

discovered just a few years before Schwann proposed his Cell Doctrine. Although it is tempting to call Purkinje’s description of the cells which bear his name the first piece of evidence in support of the Neuron Doctrine, this would be stretching the truth. In reality, anatomists at the time were still debating whether neurons in the brain stood as exceptions to the Cell Doctrine. With their long, elaborate axons and dendrites, some anatomists proposed that neurons formed a continuous,…

Mirror Neurons: Discussion and Debates The average human brain weighs only three pounds, yet the intricacy surrounding its capabilities are one of the most sought after mysteries, with regard to human anatomy. Dr. V.S. Ramachandran (2010) explains that the brain is the housing for approximately 100 billion neurons all interacting in a phenomenal number of differing connections. In studying how neural processes develop, mirror neurons were identified. Although this is a complex topic which…

The neuron is the basic working unit of the nervous system. It is a specialized cell that is designed to transmit information to other cells across the body. Neurons make up such a large part of the brain, that they are also responsible for learning, reasoning, memory, and perception. The neuron comes from the portion of the body known as the nervous system, which is responsible for the impulses sent throughout the body. The neuron is composed of several parts in its structure and to ensure…

Population Coding There are a variety of neurons types needed to code for specific patterns of a stimulus. These neurons work together to encode information which cannot be done precisely by one neuron type alone. This principle is summarized by the theory of across-neuron response pattern (ANRP). Which states a stimulus will activate a uniquely different set of patterns to discriminate between another stimuli. This is depicted by the absolute difference of neural mass. Somatosensory system…

The motor neuron diseases (MNDs) are a group of progressive neurological disorders that destroy motor neurons, the cells that control essential voluntary muscle activity such as speaking, walking, breathing, and swallowing. Normally, messages from nerve cells in the brain (called upper motor neurons) are transmitted to nerve cells in the brain stem and spinal cord (called lower motor neurons) and from them to particular muscles. Upper motor neurons direct the lower motor neurons to produce…

Write an essay describing the neuron function. The nervous system is made of the central nervous system which includes: - The brain - Spinal cord It is also made up of the peripheral nervous system which is consisted of the sensory and motor neurons and lastly the autonomic nervous system which helps in modifying the body processes such as the digestion and heart rate for the body to function properly. [1] Neurons are excitable cells that help in processing and transmitting information. Even…

Mirror neurons were discovered almost eighteen years ago, which is fairly recent for scientific understanding; it is not yet known the extent of mirror neuron functions or what happens when they are exclusively damaged (Lepage & Theoret, 2007). The areas of the brain thought to make up the MNS are up for debate, but the areas supported by the current research are the inferior frontal gyrus pars opercularis in the prefrontal cortex, the ventral pre-motor cortex, the inferior parietal lobe, and…

The mammalian nervous system consists of highly specialised cells called neurons, alongside supporting cells. The human brain contains 1010 to 1012 neurons (1). Neurons have a distinct cell shape and range from microns up to a millimeter in length. Neurons’ unique structure allows for rapid and specific transmission of signals along a neuron, and from one neuron to another. Neurons transmit nerve impulses over long and thin axons, and receive information through branches of dendrites. Although…