First picture is an imagined view from within and below, looking up.
And second, just an [out there] depiction of a human form.
white - lungs
red - heart
green - liver
yellow - spleen and pancreas
blue - kidneys
Any point to visualizations such as these? Well, personally, I like to be able to visualize stuff. There may some point if one is concerned with something like kundalini? I haven't really looked into the likes of that so much.
Just wanted to share a visual thought. Maybe draw a more attractive human form tomorrow :P haha.