The Innervation and Properties of the Urethral Striated Muscle
| Autor: | Barbara A. Van Der Werf, K. E. Creed |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Contraction (grammar)
business.industry Urology Stimulation Anatomy Autonomic Nervous System Autonomic nervous system Urethra medicine.anatomical_structure Smooth muscle Nephrology Urethral pressure medicine Animals Humans Female medicine.symptom Muscle Skeletal business Pelvic nerve Muscle Contraction Muscle contraction |
| Zdroj: | Scandinavian Journal of Urology and Nephrology. 35:8-11 |
| ISSN: | 1651-2065 0036-5599 |
| DOI: | 10.1080/003655901750174791 |
| Popis: | The striated muscle forms an outer sleeve around the urethra and occupies about 80% of the wall. In humans more than 60% of the muscle consists of slow, fatigue resistant type I fibres whereas in male greyhounds only about 6% are type I. Most of the remainder (70% of fibres) are type IIa which are classified as fast but can contract for several hours with little decline in amplitude. Stimulation of pudendal but not pelvic nerves produces contraction of the striated muscle and a rapid increase in urethral pressure. Pelvic nerve branches enter the striated muscle sleeve but pass through it to supply the inner layer of smooth muscle. The striated muscles are well suited to maintain contraction necessary for continence. |
| Databáze: | OpenAIRE |
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