Some average weights of human organs include 1.5 ounces for the bladder, 9.6 ounces for the heart, 47 ounces for a brain and 55 ounces for the liver, according to Ohio State University's Department of Pathology. Weights of organs vary from males to females, and the weights of larger organs can differ among individuals by several ounces.
The typical weight range for the bladder is 1 to 2 ounces. A male's heart normally weighs between 9.5 and 9.9 ounces, whereas a woman's heart averages 8.8 to 9.9 ounces. Ohio State University explains a man's brain is from 48 to 51.1 ounces, and a woman's ranges from 44 to 45 ounces. The liver usually weighs between 50.8 and 59.3 ounces.
InfoPlease explains that human skin weighs between 8 to 10 pounds in normal adults, with around 22 square feet of area. The skin is the largest organ in the body in terms of weight and area. One of the smallest organs in the body, the pineal gland, weighs around 0.2 gram, or 0.007 ounce. The pineal gland is in the center of the brain, according to Kids Discover. The parathyroid is between 0.004 and 0.006 ounce, or 0.12 to 0.18 gram.
An organ is defined as a collection of tissue, in animals and plants, that performs a specific function. For instance, the heart performs a vital function that pumps blood throughout the body of a vertebrate animal.