Voynich's anatomy

[ololololo]

@JoJo_Jost, I remember first learning about the brain in Michelangelo’s Creazione d’Adamo when I took History of Western Art and Architecture in the late 1990s. I find it convincing. Michelangelo was an amateur anatomist and dissector, as training for his realistic portrayal of human bodies. And although this question is hotly debated by historians nowadays, I’m fairly sure a lot of people in the Middle Ages (and before) had a decently good big-picture view of what the brain did.

I later encountered this idea of God-as-brain in Michelangelo’s Creazione d’Adamo when reading about Western esoteric spirituality. The symbolism that esotericists see in this work is the idea that there is a little piece of God peering out of the eyes of every sentient being, and that the brain (the lesser mind) is like a television set receiving a signal (the greater mind). I happen to find this convincing too, for what it’s worth. But we're not here to talk about those kinds of topics.

Another anatomical similarity I’ve noticed: The You are not allowed to view links. Register or Login to view., and You are not allowed to view links. Register or Login to view.. Could the plant on You are not allowed to view links. Register or Login to view. be an herbal remedy for nasal congestion, rhinitis, or sinusitis?

In general, given that the plants in VMS are not particularly accurate (at least we can say this about the castor bean), and given that the human organs are indeed described in balneology, then yes, it is possible. 
Perhaps VMS is a herbalist with a focus on anatomy.
Also, as Ruby Novacna pointed out, the roots of the You are not allowed to view links. Register or Login to view. plant are very similar to the shape of the eye...