a positive declaration intended to give confidence: He received assurances of support for the project. 2. promise or pledge; guaranty; surety: He gave his assurance that the job would be done. 3. full confidence; freedom from doubt; certainty: to act in the assurance of success.
Summary. Traumatic brain injury (TBI) happens when a bump, blow, jolt, or other head injury causes damage to the brain. Every year, millions of people in the U.S. suffer brain injuries. More than half are bad enough that people must go to the hospital. The worst injuries can lead to permanent brain damage or death.
Apoptosis is basically programmed cell death. Watching tv will not cause a loss of brain cells. Depending on the extent of the smack to the head, it is possible that neurons would be destroyed. do know, for a fact, that the moment we reach the age of 18, that's when we start losing 50,000 brain cells a day. What else causes brain cell loss?