Hemo the Magnificent

Hemo the Magnificent is a onehour Technicolor madefortelevision educational film, released in 1957 by Bell Laboratories and directed by Frank Capra, and first telecast by CBS. It details the workings of the circulatory system. Although Time magazine gave it an extremely negative review, calling it condescending and citing it as an example of how the scientific information was presumably dumbed down by including cute cartoon animals, it quickly became a classic of the genre, featuring incredibly detailed television animations for its time. It is one in a series of nine Bell Telephone science specials telecast in prime time on commercial network television, from the late 1950s to the mid1960s. All but one of these specials starred Frank C. Baxter the last of them starred Walt Disney.

Source: Wikipedia