How many muscles are in the brain?

Human brain consists of billions of nerve cells an nerve fires located at the upper end of spinal cord and covered by the bones of the head, which performs function such as learning, thinking, remembering, and controlling body functions. Though brain performs very useful work requiring about 20 percent of the total blood supply of the body, it does not have any muscles. The brain performs its work by flow and processing of information between and within the brain cells, rather than by any physical movement of any body parts requiring muscle action. Thus there are no muscles in the brain.

Some people do talk of brain muscle in a figurative way because the capabilities of the brains can be developed by exercising the brain, just as strength of muscles can be increased by physical exercise.