| subcutaneous part of external anal sphincter | pars subcutanea musculi sphincteri ani externi, subcutaneous portion of external anal sphincter |
|---|---|
| subcutaneous portion of external anal sphincter | pars subcutanea musculi sphincteri ani externi, subcutaneous portion of external anal sphincter |
| superficial part of external anal sphincter | superficial part of external anal sphincter |
| deep part of external anal sphincter | deep part of external anal sphincter |
| external anal sphincter | A fusiform ring of striated muscular fibres surrounding the anus, attached posteriorly to the coccyx and anteriorly to the central tendon of the perineum; it is subdivided, often indistinctly, into a subcutaneous part, a superficial part and a deep part for descriptive purposes. Synonym: musculus sphincter ani externus, external sphincter muscle of anus. (05 Mar 2000) |
| external sphincter muscle of anus | A fusiform ring of striated muscular fibres surrounding the anus, attached posteriorly to the coccyx and anteriorly to the central tendon of the perineum; it is subdivided, often indistinctly, into a subcutaneous part, a superficial part and a deep part for descriptive purposes. Synonym: musculus sphincter ani externus, external sphincter muscle of anus. (05 Mar 2000) |
| external urethral sphincter | Origin, ramus of pubis; insertion, with fellow in median raphe behind and in front of urethra; action, constricts membranous urethra; nerve supply, pudendal. Synonym: musculus sphincter urethrae, external urethral sphincter, Guthrie's muscle, musculus compressor urethrae, musculus constrictor urethrae, musculus sphincter urethrae membranaceae, sphincter muscle of urethra, Wilson's muscle. (05 Mar 2000) |
| maximal voluntary ventilation | Measure of the maximum amount of air that can be breathed in and blown out over a sustained interval such as 15 or 20 seconds. Common abbreviations are mvv and mbc. (12 Dec 1998) |
| maximum voluntary ventilation | The volume of air breathed when an individual breathes as deeply and as quickly as possible for a given time (e.g., 15 sec.). Synonym: maximum breathing capacity. (05 Mar 2000) |
| voluntary | Accomplished in accordance with the will. Origin: L. Voluntas = will (18 Nov 1997) |
| voluntary dehydration | That physiologic lag or deficit that results when sensations of thirst are not strong enough to bring about complete replacement of water loss, as in rapid sweating. (05 Mar 2000) |
| voluntary guarding | Abdominal muscle spasm that can be willfully suppressed. (05 Mar 2000) |
| voluntary health agencies | Non-profit organizations concerned with various aspects of health, e.g., education, promotion, treatment, services, etc. (12 Dec 1998) |
| voluntary hospital | A hospital supported in part by voluntary contributions and under the control of a local, usually self-appointed, board of managers; a non-profit hospital. Synonym: philanthropic hospital. (05 Mar 2000) |
| voluntary muscle | <anatomy> One whose action is under the control of the will; all the striated muscle's, except the heart, are voluntary muscle's. (05 Mar 2000) |