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- Dictionarynerve/nəːv/
noun
- 1. a whitish fibre or bundle of fibres in the body that transmits impulses of sensation to the brain or spinal cord, and impulses from these to the muscles and organs: "the optic nerve" Similar
- 2. one's steadiness and courage in a demanding situation: "an amazing journey which tested her nerves to the full" Similar Opposite
verb
- 1. brace oneself mentally to face a demanding situation: "she nerved herself to enter the room"
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Oct 30, 2023 · Nerves are the functional and structural units of the peripheral nervous system (PNS). They are composed of groups of individual specialized cells called neurons (or nerve cells), which transmit motor and sensory information back and forth between the PNS and central nervous system (CNS).
Nov 16, 2023 · Your nervous system is your body’s command center. It’s made up of your brain, spinal cord and nerves. Your nervous system works by sending messages, or electrical signals, between your brain and all the other parts of your body.
Jul 4, 2024 · A nervous system can be defined as an organized group of cells, called neurons, specialized for the conduction of an impulse—an excited state—from a sensory receptor through a nerve network to an effector, the site at which the response occurs.
Dec 21, 2023 · The cranial nerves are a set of twelve nerves that originate in the brain. Each has a different function for sense or movement. Learn more here.
Jan 16, 2024 · Neurons, also known as nerve cells, are essentially the cells that make up the brain and the nervous system. Neurons do not touch each other, but where one neuron comes close to another neuron, a synapse is formed between the two. According to new research, the human brain contains around 86 billion neurons (Herculano-Houzel, 2009).
Dec 21, 2023 · A pinched nerve occurs when too much pressure is applied to a nerve by surrounding tissues, such as bones, cartilage, muscles or tendons. This pressure can cause pain, tingling, numbness or weakness. A pinched nerve can occur in many areas of the body.
Mar 30, 2024 · Overview. Peripheral nerves send messages from the brain and spinal cord to the rest of the body. They help do things such as move the body's muscles for walking and sense that the feet are cold. Peripheral nerves are made of fibers called axons that are insulated by surrounding tissues. Peripheral nerves are fragile and easily damaged.
Sep 24, 2023 · Neuropathic pain can arise from incorrect nerve signalling either within the brain and spinal cord (central nervous system) or from incorrect signalling affecting the nerves outside the brain, the peripheral nerves.
Jun 13, 2024 · spinal nerve, in vertebrates, any one of many paired peripheral nerves that arise from the spinal cord. In humans there are 31 pairs: 8 cervical, 12 thoracic, 5 lumbar, 5 sacral, and 1 coccygeal. Each pair connects the spinal cord with a specific region of the body. Near the spinal cord each spinal nerve branches into two roots.
Apr 21, 2024 · Overview. Nerve roots: C6 – T1 (also contains fibres from C5 in some individuals). Motor functions: Innervates the flexor and pronator muscles in the anterior compartment of the forearm (except the flexor carpi ulnaris and part of the flexor digitorum profundus, innervated by the ulnar nerve ).
