Showing posts from December, 2012

What are the Functions of Neurons?

Neurons are the structural and functional unit of our nervous system. They are the essential part of the communication system in our brain. Neurons perform all the tasks (sending, receiving and processing) to maintain the communicative action in the nervous system. In fact, our nervous system is surrounded by more than 100 million neurons, and each neuron can receive information from thousands of different cells. Learn more about Neurons Basic Functions of Neurons The basic function of a neuron is to process and transmit nerve impulses from and to the nervous system. Neurons can simultaneously receive and integrate stimuli (impulses) either from the body or other sources. They can interpret stimuli into a change in membrane potential. Using the conduction process, neurons can rapidly transmit this change in membrane potential over long distances. They can convert the action potentials (the electrical messages) into particular neurotransmitters (the chemical messages), following th

Structure of Neuron

The size and shape of a typical neuron is distinctly different than any other cell in the human body. The diameter of a neuron is between 5 and 150 ┬Ám. As like most of the cells in the body, neurons are consist of a cell body. The cell body is the core component of a nerve cell. It contains nucleus, cytoplasm and other organelles. The cell body that contain a euchromatic nucleus often has a prominent nucleolus. This nucleolus contains finely dispersed chromatin. The cytoplasm of the cell body is composed of nissl bodies, golgi complex, neurofibrils, mitochondria, lysosomes and centriole. Unlike most of the cells, neurons also consist of two major parts, an axon and multiple dendrites. Learn more about Neurons Basic Structure of a Neuron Typically, each neuron has multiple dendrites. They usually arise from the cell body and appear as the branches of a tree. Dendrites also contain cytoplasm. The composition of the dendrite cytoplasm is quite similar to the cell body. However, nucl

What are Neurons?

The human body is made up of around 30 trillion cells, with over 200 different cell types. Each type of cells have their own structure and function. Of these, some perform distinctly specialized tasks in the body system. In the human nervous system , cells specialized in receiving, transmitting and processing nerve impulses to and from the brain are known as neurons. They are the basic structural and functional units of the brain and serve as the core component of the communication system in the human body Each neuron processes and transmits information in both chemical and electrical forms. They receive electric signals from all parts of the body and translate these signals into specific neurotransmitters and deliver these neurotransmitters to target cells. Structurally, similar to other cells in the body, a neuron generally consists of a nucleus, mitochondria, golgi bodies, cytoplasm and cell membrane. However, most neurons have three distinct parts: A cell body An axon Mu