File:Principles of human physiology - with their chief applications to pathology, hygiene, and forensic medicine - especially designed for the use of students (1843) (14761182466).jpg

Identifier: 61250530R.nlm.nih.gov
Title: Principles of human physiology : with their chief applications to pathology, hygiene, and forensic medicine : especially designed for the use of students
Year: 1843 (1840s)
Authors: Carpenter, William Benjamin, 1813-1885 Clymer, Meredith, 1817-1902
Subjects: Physiological Phenomena Physiology
Publisher: Philadelphia : Lea & Blanchard
Contributing Library: U.S. National Library of Medicine
Digitizing Sponsor: Open Knowledge Commons, U.S. National Library of Medicine

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
submitted to the influence of very extreme temperatures, with littlepermanent injury. 30. The adjoining figure, which displays the muscular apparatus of theinterior of the body of a Cock-chafer, will give an idea of its complexity andvariety, and of the large portion of the trunk which is occupied by it; andwill also show the division of the skeleton into segments, the number ofwhich in Insects is limited to thirteen. These are nearly equal and simi-lar to each other in the larva; but, in the perfect insect, the three behindthe head are united into the thorax, to which the legs and wings areattached; and the remainder form the abdomen, which has little concern inlocomotion. * Reference is here especially made to the celebrated problem of Maraldi, in re-gard to the angle at which the three planes, forming the bottom of the Bees cell,should meet each other, so as to have the greatest strength, with the least expenditureof material. 44 ON THE PLACE OF MAN IN THE SCALE OF BEING. Fig. 4.2
Text Appearing After Image:
Section of the trunk of Melolontha vulgaris (after Strauss-Durckheim), showing the complexityof the muscular system. The first segment of the thorax (1) is chiefly occupied by the muscles ofthe head, and those of the first pair of legs. The second and third segments contain the very largemuscles of the wings, and those of the other two pairs of legs. The chief muscles of the abdomenare long dorsal and abdominal recti, which move the several segments one upon the other. General characters of Vertebrata. 31. In none of the three preceding divisions of the Animal kingdom, doesthe Nervous System attain such a degree of development, as to give it thatpredominance in the whole fabric, which it evidently attains in Vertebrata.In the Radiata and Mollusca, its functions are evidently restricted to themaintenance of the nutritive operations; and to the guidance of the animal,by means of its sensory endowments, in the choice of food, as well as (insome instances) in the search for an individual

Note About Images