answer: layers of sheathing
the brain is protected by the skull and several layers of sheathing from physical damage and insulate it against extreme temperatures. it is encapsulated in several layers of connective tissue sheathing known as meninges protecting fragile neural tissue and insulate the brain from different extreme temperature.
Public health policies and government regulations are the basis of good health and disease prevention fo the public.
First of all, if we create public health policies and government regulations that allow people who possibly cannot afford their medications to get them for reduced price or free, we can increase the amount of people who have good health and aren’t prone to diseases.
Government regulations can also help people who are well off, too. If we put government regulations and policies in place promoting good health habits like washing your hands often even with the CDC, we would be able to show the public the benefits of good health.
Thus, using government regulations and health policies can help anyone and give support and reasons to the general public to maintain good health.
Hope this helps
Medical Definition of Vaccination. Vaccination: Injection of a killed microbe in order to stimulate the immune system against the microbe, thereby preventing disease. … To immunize against viral diseases, the virus used in the vaccine has been weakened or killed.