Resin filled blood vessels in the human body.
Blood vessels of a baby.
Leonardo da Vinci's anatomical sketches... - The Meta Picture via cgpin.com
Science off the Sphere: Lenses and Vortices- fluid movement
Leonardo da Vinci anatomist. He totally went to cemeteries and cut up dead bodies for this. True story.
Anatomical Representations by L. DaVinci
Leonardo da Vinci - Study of the Skeleton, 1511
Leonardo da Vinci, 1452-1519, Italian, The muscles of the shoulder and arm, and the bones of the foot, c.1510-11. Pen and ink with wash, over black chalk on paper, 28.9 x 20.1 cm. Royal Collection Trust, Windsor. High Renaissance.
A page showing Leonardo's study of a foetus in the womb (c. 1510) Royal Library, Windsor Cast
Leonardo Da Vinci's Anatomical Sketches by Penelope
10-Minute Talk - Leonardo: Illustrator of Anatomy | Royal Collection Trust
Leonardo da Vinci View of a Skull, c. 1489
The human heart stripped of fat and muscle, with just the angel veins exposed.