what is the second largest muscle in the human body
The liver is the second largest organ and the largest INTERNAL organ.   The skin is the largest organ in the human body. The skeleton is the third largest organ and second â¦ largest INTERNAL organ.he liver is the second largest organ and the largest INTERNAL organ.   The skin is the largest organ in the human body. The skeleton is the third largest organ and second â¦ largest INTERNAL organ.