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.Continue Reading
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
Water makes up about 73 percent of the human brain and helps make hormones and neurotransmitters. The human heart also is composed of about the same percentage of water. The mature human body overall has a water composition of about 60 percent.Full Answer >
The Human Brain website has detailed and up-to-date atlases of the human brain. The website offers a print version of the atlas with a companion DVD.Full Answer >
Several specialized areas make up the human brain, such as the cortex, brain stem, basal ganglia and cerebellum. Another way of looking at the human brain is to consider its different lobes, the frontal, parietal, temporal and occipital lobes, each dedicated to its own set of functions. The meninges and skull surround the brain, offering it protection from injury. As of 2015, InnerBody.com offers an interactive anatomy explorer with clickable images and detailed information on the areas of the brain.Full Answer >
There are three main parts of the human brain: the forebrain, the hindbrain and the midbrain, according to Serendip Studio from Bryn Mawr College. Each part is composed of smaller sections, with the forebrain consisiting of the cerebral cortex, cerebrum, neocortex and limbic system; the hindbrain composed of the cerebellum, pons and medulla; and the midbrain composed of the tectum and tegmentum. When combined with the medulla and the pons, the midbrain is also known as the brainstem.Full Answer >