Before attempting the final animated sequences for the project, I tested out a heartbeat that would be looped in the respective section.

Also included, are background layers that would move with the Busiman character as he walked through the first tunnel.

(Above) The looped heartbeat animation.

(Below) The background image files created.

The final storyboards were created, to help demonstrate both to myself and others, how the animation would play out. 

The scene would move from the first tunnel, towards the beating heart, then outwards, showing the figure of the person with a heart problem. Text would then fade into view, afterwards.

Several further test animations were created, with some practicing the effects that would be used in the final animation, and some that featured a proto-Busiman character within them.

I moved away from the dark tunnel and torch, into a lighter tunnel idea.

The design for the character (Labelled as 'Busiman' from now on) was mostly finalised, settling on a certain look. The process of working him into animated sections would now commence. 

(Above) Final designs for the character.

(Below) Idea for the character moving through the sludge/fat.

I produced sample, incredibly basic animations representing the first scene from the piece. A stock, blank figure was used before a final character was chosen.

The idea was, that the character would move through the fatty artery tunnel with a torch, lighting his way through the darkness slowly.

(Above) Two separate examples of basic, test animations.