yes.
The Ptolemaic System: The universe of the Middle Ages
Geocentric cosmological model from Cosmographia, Antwerp, 1539
This image shows details of the spinal cord. Cajal’s patient investigation revealed the elaborate organization of the fibers that course between the spine and brain. The top image is a lateral view of the spinal cord; along the left, motor nerves connect to muscles, and along the right, a sensory nerve (red) snakes down to the skin.
The bottom image is a cross section showing motor cells (black) in the spinal cord.
Source:
discovermagazine.com
High-res
Notes: 105
6/30/11 — 3:00pm
Short URL: http://tmblr.co/ZXV5ox6cam9H
i had to lol
Source:
Flickr / mesterfoto
High-res
Notes: 811
5/28/11 — 2:14am
Short URL: http://tmblr.co/ZXV5ox5X1QHK
The definition of comfortable clothing.
M13 dark and light polution comparison. (by chris_swatton)
