And those roads are always full of little ... blood and the body with Terrific Scientific from BBC Teach. This video recaps all the key learning points about the circulatory system.

Closed circulatory system, but fluid constituents of blood leak out of capillaries and return ... then to the single right aortic arch then on to body. Also 4 chambered heart, with full double ...

Start with dorsal aorta, formed by 4 pairs of efferent branchial arteries. Within the pleuroperitoneal cavity, it gives off a series of abdominal branches. Locate each of the paired and unpaired ...