On the anatomy of vertebrates (electronic resource) (1866) (14750642532)

Identifier: b20416039_003 (find matches)

Title: On the anatomy of vertebrates (electronic resource)

Year: 1866 (1860s)

Authors: Owen, Richard, 1804-1892

Subjects: Anatomy, Comparative Vertebrates Fishes Reptiles Mammals Birds

Publisher: London : Longmans, Green

Contributing Library: Wellcome Library

Digitizing Sponsor: Wellcome Library

Text Appearing Before Image:

-noids, ib.have their bases deflected from each other, keepingpatent the e rima glottidis : the e cartilages of Santorini, ib. k, k,are hook-shaped. The lower vocal cords, ib. g, g, are large and 592 ANATOMY OF VERTEBRATES. prominent; above them are the orifices, e, e, of the deep ventri-cles : the upper cords are barely definable. The epiglottis,ib. a, is a longish triangle with the apex entire and antroverted,the base medially cleft by the so-called i sulcus, ib. d; and pro-duced into two processes (c cornua of Casserius). Between thecommissure of the lower cords, g, g, and the epiglottis is an ovalcavity, c, above which is the i semilunar ridge or i membrane, b.In the Ass, the wings of the thyroid unite anteriorly at a rather obtuse angle: the cricoid462 resembles that of the Horse : it is similarly cleft and divaricatedMm Imk m ^Sm 463. The crico-thyroid interspace is relatively less thanin the Horse. The epiglottis, a,is a more equilateral trianglethan in the Horse, with the apex

Text Appearing After Image:

Larynx of the Horse laid open, cccxx. . The Larynx of the Ass laid open, ccoxx. less acute: it is perforated by two apertures, ib. c, c, leading totwo sacculi continued upon part of the inner surface of thethyroid. Between the apertures is the arched recess, ib. b, inwhich the lower vocal cords, d, d, are inserted ; these arisingbehind from the bases of the arytenoids. The voice of the horse under sexual or other pleasurable excite-ment is due to movements of the vocal cords through forciblyexpired air, but with short intervals or interruptions of the current, LARYNX OF MAMMALIA. oP3 4<U producing the shrill but tremulous or vibratory scale of notes,sinking to its close, and called the neigh. It is peculiar to thegroup of Equid(c with callosities on both fore and hind legs andwith flowing mane and tail; the species with callosities on thefore legs only, with stiff erect manes and naked terminally tuftedtails, vibrate their vocal cords by currents of air in alternateopposite directi

1866 books on the anatomy of vertebrates 1866 book illustrations ornithology birds zoological illustration mammals animals comparative anatomy vertebrates zoology images from internet archive

1866

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