Examples of ostium in the following topics:
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Open and Closed Circulatory Systems
- As the heart beats and the animal moves, the hemolymph circulates around the organs within the body cavity, reentering the heart through openings called ostia (singular: ostium).
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Female Duct System
- The tubal ostium is the point where the tubal canal meets the peritoneal cavity, while the uterine opening of the fallopian tube is the entrance into the uterine cavity, the utero-tubal junction.