The average weight of the human brain is about 3 pounds, according to the Smithsonian Institution. In comparison, a chimpanzee's brain weighs less than a pound.Know More
The brain consists of about 10 billion neurons, or nerve cells. Each of these nerve cells can make connections with about 10,000 other nerve cells, asserts Dr. Genevieve Orr of Williamette University.
The human brain has tripled in size during 7 million years of evolution, states Professor John Hawks from the University of Wisconsin-Madison. An early human ancestor, Australopithecus afarensis, had a brain capacity similar to apes of modern times. This brain capacity increased from the evolution from Homo habilis to H. erectus to H. sapiens, or modern humans.Learn more about Organs
While no specific age has been identified as the age at which the human brain is fully mature, the Washington Post relates that many scientists agree that the brain does not reach maturity until at least the mid-20s. Some studies suggest that the brain continues to develop into the early 30s.Full Answer >
According to WebMd, the average male heart weighs 10 ounces. The average female heart weighs 8 ounces. The human heart is about the size of a fist.Full Answer >
The average size of an adult human brain weighs 3 pounds and is about 6 inches long. At birth, the human brain weighs only ¾ pound.Full Answer >
An adult at rest breathes about 17,280 to 23,040 times a day at 12 to 16 breaths per minute. Other factors, such as exercise and vigorous physical activity, result in more breaths per day.Full Answer >