| 单词 | unmyelinated |
| 例句 | Myelin is often likened to the plastic coating around electrical wires—it insulates the neural circuits, making them about a hundred times faster than unmyelinated circuits. The 57 Bus 2017-10-17T00:00:00Z So a myelinated axon transmits a nerve impulse faster, with less energy consumption, and is better protected from cross talk than an unmyelinated one. College Physics for AP Courses 2015-08-12T00:00:00Z The Schwann cells are separated by gaps of unmyelinated fibers called nodes of Ranvier over which the nerve impulse travels as the signal passes along the neuron, increasing the speed of transmission. Biology for AP Courses 2022-06-09T00:00:00Z Propagation, as described above, applies to unmyelinated axons. Anatomy and Physiology 2013-06-19T00:00:00Z The auditory nerve contains myelinated fibers, which are used to perceive loudness and to process speech, as well as unmyelinated ones. When Everyday Noise Is Unbearable 2014-12-01T05:00:00Z This fatty white substance insulates axons with a myelin sheath, speeding up the transmission of electrical impulses by a factor of up to at least 50, compared to unmyelinated axons. The story of a lonely brain 2012-10-01T23:15:06.163Z The signal moves faster than in unmyelinated axons and is insulated from signals in other nerves, limiting cross talk. College Physics for AP Courses 2015-08-12T00:00:00Z These unmyelinated spaces are about one micrometer long and contain voltage gated Na+ and K+ channels. Biology for AP Courses 2022-06-09T00:00:00Z In unmyelinated axons, this happens in a continuous fashion because there are voltage-gated channels throughout the membrane. Anatomy and Physiology 2013-06-19T00:00:00Z Gray matter is largely made up of the unmyelinated parts of neurons—neurons that are not sheathed by glial cells—whereas white matter is comprised of axons wrapped in insulating oligodendrocytes. Know Your Neurons: What is the Ratio of Glia to Neurons in the Brain? 2012-06-13T15:45:02.603Z Propagation along an unmyelinated axon is referred to as continuous conduction; along the length of a myelinated axon, it is saltatory conduction. Anatomy and Physiology 2013-06-19T00:00:00Z This neuron then projects to a target effector—in this case, the trachea—via gray rami communicantes, which are unmyelinated axons. Anatomy and Physiology 2013-06-19T00:00:00Z |
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