A cadaver is a dead body that is used for dissection. To 
dissect is to separate into pieces for scientific 
examination. Medical students work with cadavers of 
human beings to learn about the anatomy (structure) of the 
human body. However, in biology classes, cadavers of 
non-human animals such as frogs and pigs are dissected 
to learn lessons about basic anatomy because there are 
many internal structural similarities between non-human 
animals and humans. In older times, scientists used the 
cadavers of executed criminals or stole them from graves 
for human dissection.
 
A cadaver with a toe tag.
 
Chemicals are injected into the bodies to prevent them from decaying too quickly. This 
process is known as embalming and the most used chemical for this purpose is a 
colorless substance known as formaldehyde.  
A cadaver is also known as a corpse. Cadaveric means relating to a cadaver. 
Cadaverous means to be pale and to appear like a dead body, as can occur in many 
people who are sick. 
Cadaver comes from the Latin word "cadere" meaning "to fall." The reason for this is that 
a dead person falls from a standing position, or as many people say, "drops dead."