The Urinary and Osmoregulatory Systems of Birds
| Autor: | Susan E. Orosz, M. Scott Echols |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
medicine.medical_specialty
040301 veterinary sciences Urinary system 030231 tropical medicine Body water Renal function Urine Kidney Birds 0403 veterinary science 03 medical and health sciences Osmoregulation Vasotocin 0302 clinical medicine Internal medicine medicine Animals Vasoconstrictor Agents Small Animals urogenital system Reabsorption Chemistry Osmolar Concentration 04 agricultural and veterinary sciences General Medicine Endocrinology medicine.anatomical_structure Renal physiology Antidiuretic |
| Zdroj: | Veterinary Clinics of North America: Exotic Animal Practice. 23:1-19 |
| ISSN: | 1094-9194 |
| Popis: | The avian kidney contains both cortical or reptilian and medullary or mammalian nephrons. The kidney filters up to 11 times the total body water daily. Approximately 95% of this volume is reabsorbed by tubular reabsorption, which likely results from a change in the rate of filtration and/or the rate of reabsorption. These changes can result because of the antidiuretic hormone arginine vasotocin. The urinary concentrating ability generally varies inversely with body mass; however, birds can concentrate their urine, often at 2 to 3 times the osmolality of plasma. Further concentration of urine may occur by retroperistalsis. |
| Databáze: | OpenAIRE |
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