The function of a valve is to alter or regulate a flow or movement, and/or render it unidirectional. The body's valve mechanisms would constitute a fascinating study in themselves if for no other reason than for the variety of which Mother Nature has availed herself. Some are thought of commonly in terms of 2-way flow (laryngeal cords, lips, nasal turbinates) while most are thought of as being associated with 1-way flow (iris, external nares, cricopharyngeal or upper esophageal sphincter, all the heart valves, venous valves, pylorus, sphincter of Oddi, ileo-caecal valve, urethral sphincters). Some are active (anal sphincters) and some passive (valve of the coronary sinus). [...]
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.116735 |
| Date | January 1964 |
| Creators | Wiegand, Frederick M. |
| Contributors | McCorriston, J. (Supervisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Science. (Department of Experimental Surgery. ) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: NNNNNNNNN, Theses scanned by McGill Library. |
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