Another theory notes that the bilateral symmetry of most complex animals necessitates that axons encounter decision points, called commisures, to direct them in radically specific directions like right or left. There is evidence of certain types of cells termed guidepost cells that include other ...
The AIS appears to serve as a filter that screens out dendritic proteins, Hedstrom et al. conclude. How the structure bars some proteins from the axon is still uncertain. Injuries and diseases can transform dendrites into axons. The findings raise the possibility that these insults could cause ...
ASTM ASTMA ASTME ASTMH ASTMIS ASTMP ASTMS ASTN ASTNA ASTO ASTOOT ASTOP ▼ Complete English Grammar Rules is now available in paperback and eBook formats. Make it yours today! Advertisement. Bad banner? Pleaselet us knowRemove Ads
What is graded potential?Dendrites and Axons:Neurons in the human body consist of three main parts- the cell body, axons, and dendrites. Cell bodies contain the nucleus of the neuron and are flanked by dendrites that carry information to the cell body and axons that carry this information ...
What is the myelin sheath and what is the function? Answers should include: explanation of the type and location of membrane and what increases speed at propagation of A.P. Do all nerves have a myelin sheath? Is myelin sheath an organelle? Why some axons are not insulated by the myelin ...
Nerves work by transmitting electrical signals, or nerve impulses, along their length. Neurons, the building blocks of nerves, have a cell body, dendrites (receiving ends), and axons (transmitting ends). When a stimulus is detected by sensory neurons, it generates an electrical signal that trave...
a loose network of neurons stretching from the midbrain down to the medulla, is involved in various functions, including sleep and arousal, temperature regulation, and motor control. Groups of motoneurons form two cranial nuclei; their axons branch out to create the oculomotor nerve and the troch...
Multiple sclerosis (MS) is a progressive, degenerative disease of the central nervous system whose distinguishing feature is the development of scattered, focal lesions of the myelin sheath of the axons.1 The disease usually strikes in the third or fourth decade of life and affects more women (...
What is the function of receptors in the cell membrane? Why are dendrites important? Describe neurons, cell bodies, dendrites, and axons. How do neurotransmitters function at synapses? Why is an efferent neuron multipolar? What are the functions of the parts of an electrochemical cell? What send...
An axon, or nerve fiber, is a long slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body or soma. Axons arein effect the primary transmission lines of the nervous system, and as bundles they help make up nerves. ...