1.Any of the impulse-conducting cells that constitute the brain, spinal column, and nerves in vertebrates, consisting of a nucleated cell body with one or more dendrites and a single axon. 2.A similar impulse-conducting cell in invertebrates. In both senses also callednerve cell. ...
Nerves with axons that conduct electrochemical impulses toward the central nervous system (CNS) are afferent, nerves with axons that conduct impulses away from the CNS are efferent, and nerves with both afferent and efferent axons are mixed. Nerves in the peripheral nervous system are roughly ...
Fill in the blank. Nerve fibers that conduct sensory signals to the central nervous system is known as ___. Fill in the blank. The nervous tissue outside of the central nervous system (CNS) makes up the ___ nervous system. Fill in the...
In essence, there are two functional cells types in the CNS: neurons and the neuroglia. In addition, there are other supporting cells that include the ependymal cells, the cells of the choroid plexus and the meninges, and the cells that comprise the vasculature. Neurons Neurons are the ...
16.(physiology) of nerves and nerve impulses; conveying sensory information from the sense organs to the CNS.(生理学)指神经和神经冲动;从感觉器官将感官信息传送到中枢神经系统。 17.nerve conduction velocity神经传导速率 神经传导速率 18."The cranial nerves handle head and neck sensory and motor activi...
The most studied, and excitable, of the cells that conductnerve impulsesare known as neurons. A “typical” neuron is depicted inFig. 18.14. By even a cursory glance, the extreme asymmetry of a neuron is obvious. The major structural features of a neuron include a single soma or cell body...
The nerve cells in the nervous system can communicate with the neighboring nerves, muscles, or glands with the help of neurons. These nerve cells have...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts ...
组胚学英文课件-神经组织Nerve Tisse NERVETISSUE INTRODUCTION Compositionofnervetissue ❖Nervecell(neuron):structuralandfunctionalunitofthe nervoussystem---generateandtransmitnerveimpulses ❖Neuroglialcell(glialcell):nonconductingcell---support,protect,nourishandinsulate NEURON ❖Structure▪Soma▪Process(n...
Cranial nerve palsy is a congenital or acquired dysfunction of 1 or more cranial nerves that will, in turn, lead to focal neurologic abnormalities in movement or autonomic dysfunction of its territory. Head/ neck trauma, mass effect, infectious processes, and ischemia /infarction are among the ma...
Oligodendrocytes are glial cells that myelinate axons in the central nervous system (brain and spinal cord). An oligodendrocyte is a cell with many projections off of the cell body; each one of these wraps around a segment of an axon to myelinate it. This way, one oligodendrocyte is ...