Tåspetsgångare
Tåspetsgångare är de djur som har utvecklat ett rörelsemönster som innebär att de vid förflyttning endast sätter ned tåspetsen i marken. Denna typ av anpassning av extremiteterna har fördelen att det ofta gör djuret till en snabb löpare, vilket är en fördel när det måste fly från rovdjur. Till de mest utpräglade tåspetsgångarna räknas bland annat hästdjuren.
Se även
Referenser
- Jordens djur, Bonnier Fakta Bokförlag, 17 band, 1984-1988.
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Författare/Upphovsman: unknown, Licens: CC BY 4.0
A galloping horse and rider.
Iconographic Collections
Keywords: Motion; Riding; Eadweard Muybridge; University of Pennsylvania.; Movement
Författare/Upphovsman: Internet Archive Book Images, Licens: No restrictions
Identifier: horseitstreatmen09axej (find matches)
Title: The Horse : its treatment in health and disease, with a complete guide to breeding, training and management
Year: 1905 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London : Gresham
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University
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Text Appearing Before Image:
the Eoyal Agricultural Society froman article on the structure of the horses foot by Professor Sir Geo. T.Brown, and published in the Societys Journal, 1891. In fig. 658 both man and horse have the foot placed as it is in nature. 490 THE HOKSES POSITION IN THE ANIMAL WORLD Man presents the entire under surfaces of the bones of the tarsus (hock ofthe horse), with the metatarsal bones and the four phalanges, to the groundsurface, while the horse stands on the fourth or terminal phalanx. Fig. 659shows the positions reversed; the foot of the man has the points of thetoes on the ground in a position corresponding to that which is naturalin the horse, and the horse is supposed to be in the impossible positionof having the whole of the bones from the point of the hock to the lastphalanx of the toe on the ground as in the foot of the man. The teachingof the diagram is that for the horse to exhibit a perfect foot, the bonesbelow the carpus (knee) and the tarsus (hock) would have to be included
Text Appearing After Image:
Fig. 659.—Foot of Man and Foot of Horse Compared (positions reversed)(Note position of ground surface in each case.) The names of the several bones are given below fig. 658 on the preceding page in the structures of the organ; instead of this being the case, it isobvious that what is called the foot of the horse only includes the twolast phalanges. It will be noticed in comparing the above illustrations with theskeletons in fig. 655, page 486, that in man the bones of the leg (the tibiaand fibula) up to the knee, and the thigh-bone (femur) from the kneeto the hip-joint, form a column which is nearly a straight line. Thelimbs of the horse, on the contrary, present very decided angles at severalpoints, chiefly at the shoulder, elbow, hip, stifle, and hock joints; andalso from the fetlock-joints to the ground surface, an arrangement whichis eminently calculated to give freedom of movement, and at the sametime les!5en the effect of concussion. Muscular System.—The bones of the skeleto
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