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OJVRTM
Online Journal of Veterinary Research©
Volume
21(6):328-334, 2017.
Morphology of
lung and trachea in long-eared hedgehog (Hemiechinus
auritus)
Mohammad Reza Paryani DVM PhD, Hossein Kianfar
DVM.
Department of Basic Sciences, College of
Veterinary Medicine, Islamic Azad University, Karaj Branch, Alborz, Iran
ABSTRACT
Paryani MR, Kianfar
H., Morphology of lung and trachea in long-eared hedgehog (Hemiechinus
auritus), Onl J Vet Res., 21(6):328-334, 2017. Five long-eared adult male hedgehogs
without respiratory disease were used. After euthanasia, tracheal bifurcation
was set with a pin in dorsal and lateral recumbency
and lobes were inflated by syringe. Lungs showed no pleural blebs, edema, or
infection. Lung volume was determined by weight displacement. Cranial cervical
ring caudal to cricoid cartilage, caudal cervical ring at point of thoracic
inlet and caudal thoracic ring cranial to tracheal bifurcation measurements, were recorded. Tracheal rings were counted on
digital image. Tracheobronchial tree and lungs were injected with Rhodopas color resin through larinx
plastic cannula, solidified for 24h, and then macerated with concentrated HCl. We find that cartilage rings varied 10 to 11 in
cervical and 6 to 10 in thoracic regions. Rings were oval with cross-section
diameter of 3.67 ± 0.077mm and dorso–ventral of 2.24
± 0.14mm. Trachea bifurcated right and left between
the 2nd and 3rd rib. The right principal bronchus
branched into 4 lobar cranial, caudal, middle and accessory bronchi. The left principal bronchus
did not have lobar branches and branched directly into several tertiary
bronchioles. The right lung had 4 lobes but the left lung, only 1. In
conclusion, the respiratory system in hedgehogs is similar to mice. Findings are supported by images.
KEY-WORDS: Anatomy;
Trachea; lung; Bronchus; Hedgehog
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