Effects of Ovulation on the Conduction and Contraction Velocities in Rabbit Oviduct: Contrasts Between Longitudinal and Circular Muscle1
| Autor: | Anthony Johns, Larry W. Coons |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Estrous cycle
endocrine system medicine.medical_specialty Contraction (grammar) urogenital system media_common.quotation_subject Cell Biology General Medicine Biology Thermal conduction Human chorionic gonadotropin chemistry.chemical_compound Endocrinology Castration Reproductive Medicine chemistry Internal medicine medicine Oviduct Ovulation hormones hormone substitutes and hormone antagonists reproductive and urinary physiology Ovum Transport media_common |
| Zdroj: | Biology of Reproduction. 27:440-448 |
| ISSN: | 1529-7268 0006-3363 |
| DOI: | 10.1095/biolreprod27.2.440 |
| Popis: | The contraction and electrical conduction velocity of the longitudinal and circular muscle of the oviduct from rabbits in estrus, 24 or 72 h following administration of human chorionic gonadotropin (hCG) or 14 days following castration have been compared. Two populations of conduction and contraction velocities were identified, with the faster velocity being associated with the longitudinal muscle. There was a large overlap between longitudinal and circular contraction, suggesting complex relationships between longitudinal and circular muscle. From the results it appears that during ovum transport the circular velocities increased, with the slowest rates at estrus. The values obtained 72 h following hCG injection most closely resembled those in the castrate group of animals. In the longitudinal orientation, however, the velocities were greater 24 h following hCG injection than at estrus or 72 h following hCG injection, suggesting a complex relationship between both longitudinal and circular muscle of the oviduct following ovulation. |
| Databáze: | OpenAIRE |
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