No he did not. The sketches and drawings he made in his many sketch books were for his reference and to experiment with ideas. An artist in his day was only paid when a wealthy Patron asked for a specific piece of art to be made.
In all recovered drawings of Leonardo da Vinci, he appears to be of normal weight.
engineering
The phrase "drawings of and" does not make sense.
His curiosity, drawings and many more
Leonardo Da Vinci
Leonardo da Vinci was related to medical through his drawings but never really had any direct contact with the respiratory portion of it.
They were detailed drawings of anatomy.
He never did. The drawings from Leonardo da Vinci which supposedly were of a bicycle has later turned out to be faked.
No, my friend. That was Leonardo da Vinci.
Renaissance ideas included arts and science
Leonardo da Vinci
Leonardo Da Vinci painted it - it is not a drawing.