Unidentified creator(s)
n.d.
Section through Visible Human Male - thorax, including heart (with muscular left ventricle), lungs, spinal column, major vessels, musculature (from Thorax subset)

Color Cryosection
U.S. National Library of Medicine, Visible Human Project
Courtesy of National Library of Medicine (NLM), The Visible Human Project
 
LL/6888