Title: Elementary anatomy and physiology : for colleges, academies, and other schools
Identifier: elementaryanato00hitc (find matches)
Year: 1869 (1860s)
Authors: Hitchcock, Edward, 1793-1864; Hitchcock, Edward, 1828-1911
Subjects: Anatomy; Physiology
Publisher: New York : Ivison, Phinney, Blakeman & Co. ; Chicago : S. C. Griggs & Co.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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276 HITCHCOCK'S ANATOM 488. Trachea of Insects—Spiracles—Mechanism of Respiration.—Wisdom of this Arrangement.—The res- piratory vessels of Insects are analogous to those of birds in that they extend through a large part of the body. Fig. 272.
Text Appearing After Image:
Trachea of "Water-Scorpion, a. Head. b. First Pair of Legs. c. First Segment of Thorax, d. Second Pair of wings, e. Second Pair of Legs. /. Tracheal Trunk. g> One of the Stigmatae. h. Air-Sac. The essential organs are Trachea or air-vessels, which open upon the sides of the body, and freely communicate with one another. Air sacs are found in the front parts of the body 483. What are the essential organs of respiration in insects ? Whereabouts in the ani- mal are the tracheae found ?

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