The principles of psychology . ipetalfibres with these partially-differentiated inferior centres;and receiving, as it also does, directly or indirectly, nervesfrom the special sense-organs, the medulla oblongata is acentre where the local centres concerned with nearly all partsof the body, are brought into communication. We saw, lastly,that the two great bi-lobed masses overlying the medullaoblongata and the sensory ganglia, with which they are in-timately connected, may be regarded as centres in whichthese compound connections are united into connections stillmore compound, still more various
The principles of psychology . ipetalfibres with these partially-differentiated inferior centres;and receiving, as it also does, directly or indirectly, nervesfrom the special sense-organs, the medulla oblongata is acentre where the local centres concerned with nearly all partsof the body, are brought into communication. We saw, lastly,that the two great bi-lobed masses overlying the medullaoblongata and the sensory ganglia, with which they are in-timately connected, may be regarded as centres in whichthese compound connections are united into connections stillmore compound, still more various, and still more numerous. One further fact which it remained for us to note, wasthat Avhile the more important nervous structures are thosewhich bring the parts that are acted upon by the outerworld, into relation with the parts that react upon it, thereare also nervous structures that bring all these into relationwith the vital organs: so serving to unite the parts whichexpend, with the parts which accumulate and CHAPTER III. THE FUNCTIONS OF THE NERVOUS SYSTEM. § 17. VVlienj at tlie outset^ we inquired what are ttemanifestations witli wliicli tlie nervous system is associated,we necessarily, in drawing a conclusion, asserted in generalterms the part performed by tlie nervous system. Andthough, in the chapter just ended the sole aim has beento describe nerve-threads, nerve-cells, nerve-trunks, nerve-centres, and the ways in which they are put together; yetthe ends subserved have unavoidably, from time to time,come into view. Structure and function are in our thoughtsso intimately related, that it is scarcely possible to give arational account of the one without some tacit reference tothe other. Here, however, function is to be our specialtopic. Having seen how the nervous system is constructed,we have now to see how it Avorks. The proposition with which the first chapter ended wasthat nervous evolution varies partly as the quantity ofmotion generated in the orga
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Keywords: ., bookcentury1800, bookdecade1860, bookidpri, booksubjectpsychology
