Distribution of functional capillaries in diaphragm muscle

Weizheng Wang, Gary C. Sieck

Research output: Contribution to journalConference article

Abstract

The distribution of functional (perfused) capillaries in the rat diaphragm was studied in relation to muscle fiber type. Functional capillaries were identified by freeze clamping the diaphragm, thereby trapping fluorescent microspheres in the perfused capillaries. Overall, only about 26% of the entire capillary bed was perfused in the diaphragm during eupnea. Of these perfused capillaries, most (89%) surrounded type I (slow-twitch) muscle fibers. Just 11% of the capillaries surrounding only type II (fast-twitch) muscle fibers were perfused. These results suggest a correlation between the autoregulatory control of capillary perfusion and the neural control of motor unit recruitment.

Original languageEnglish (US)
Pages (from-to)284-285
Number of pages2
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Volume11 pt 1
StatePublished - Nov 1 1989
EventImages of the Twenty-First Century - Proceedings of the 11th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 1 - Seattle, WA, USA
Duration: Nov 9 1989Nov 12 1989

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

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