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The nerve net is the simplest form of a nervous system found in multicellular organisms. Unlike central nervous systems, where neurons are typically grouped together, neurons found in nerve nets are spread apart. This nervous system allows cnidarians to respond to physical contact. They can detect food and other chemicals in a rudimentary way.
Plexus. In neuroanatomy, a plexus (from the Latin term for "braid") is a branching network of vessels or nerves. The vessels may be blood vessels (veins, capillaries) or lymphatic vessels. The nerves are typically axons outside the central nervous system. The standard plural form in English is plexuses. [1][2][3] Alternatively, the Latin plural ...
Glia, also called glial cells (gliocytes) or neuroglia, are non- neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system that do not produce electrical impulses. The neuroglia make up more than one half the volume of neural tissue in the human body. [ 1 ]
The larger Sunday crossword, which appears in The New York Times Magazine, is an icon in American culture; it is typically intended to be a "Thursday-plus" in difficulty. [6] The standard daily crossword is 15 by 15 squares, while the Sunday crossword measures 21 by 21 squares.
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The cervicoaxillary canal is the passageway that extends between the neck and the upper extremities through which the long thoracic nerve and other structures pass. [1][2][3][4] Its structure is defined by being posteriorly bordered by the scapula, anteriorly by the clavicle, and medially by the first rib. The long thoracic nerve traverses this ...
Anatomical terminology. [ edit on Wikidata] In biology, the nervous system is the highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body. The nervous system detects environmental changes that impact the body, then works in tandem with the endocrine ...
A neuron, neurone, [1] or nerve cell is an excitable cell that fires electric signals called action potentials across a neural network in the nervous system.Neurons communicate with other cells via synapses, which are specialized connections that commonly use minute amounts of chemical neurotransmitters to pass the electric signal from the presynaptic neuron to the target cell through the ...