Unlike this fission bomb, the hydrogen bomb functions by the fusion, or joining together, of lighter elements into heavier elements. The end product again weighs less than its components, the difference once more appearing as energy.
Report Abuse. Afferent pathways send information to your central nervous system (CNS), or peripheral nervous system (PNS). Efferent pathways send signals from those two locations to your muscles. Taste, sight, hearing, etc. are all afferent pathways. A reflex arc, or simply reflex, is then caused by an afferent pathway signaling to the PNS (Spinal cord), which then immediately signals muscles to react.
Group of Neurons Forming Tracts. In terms of basic anatomy, the overall ascending pathway is made up of three different types of neurons. Firstly, there are first order neurons which receive sensory information from the receptors and send them to sensory neurons present in the posterior gray horns of spinal cord. The cell body of these neurons are found within the posterior nerve root ganglion. Next, there are second order neurons.