Circulatory system is the first organ system to become functional during development. Development of heart: On each side of embryo, an aorta forms ventrally and swings dorsally. The paired aortae in ...

The heart is a muscular organ that pumps blood around your circulatory system. The circulatory system is the heart and all the blood vessels in the body which carry cells and substances to all its ...

Cold toes, color changes, and swelling could be early signs of poor circulation. Here's how your toes signal cardiovascular ...

Locate each of the paired and unpaired branches from the dorsal aorta, using Figure 5.4, pages 58 - 60. Keep function and integration of circulatory system in mind as you locate organs.

It highlights the advantages mammals have developed, such as specialized anatomy for movement, advanced sensory organs, a more efficient circulatory system, and maternal care through milk production.