Like most vertebrates, humans only have one heart, which is usually located near the front and middle of the chest, slightly ...

All vertebrates except cold-water ice fish transport oxygen via hemoglobin packaged in red blood cells (RBCs). Vertebrate RBCs vary in size by thirtyfold. Differences in RBC size have been known for ...

As a cardiothoracic surgeon, I tend to write about topics that involve cardiovascular wellness. Most times, the heart and its ...

Researchers from Cornell University and the University of Pennsylvania have created a lifelike robotic lionfish with a circulatory system, reports Gizmodo. That circulatory system enables the fish to ...

The heart and arterial (efferent) circulatory system in Argas radiatus and Ornithodoros turicata (Argasidae) and in Ixodes scapularis, Dermacentor variabilis and Amblyomma tuberculatum (Ixodidae) are ...