A(n) is an injection of weakened or dead viruses or bacteria, or pieces of proteins from weakened or dead viruses or bacteria. it is given to the immune system of people "learn" how to defeat the real virus or bacteria.

Vaccine

A vaccine is a biological preparation that contains the weakened or the killed microorganisms like viruses or the bacteria that is given in the form of an injection in order to increase the protection against the particular disease.

It is like a training course for the immune system. They prepare the body to fight against the disease. Whenever, the body is exposed to foreign invaders like bacteria and viruses, the body immune cells called as lymphocytes act against them by producing antibodies against them.

Example: MMR (measles, mumps, and rubella) vaccine, chickenpox vaccine etc.

voluntary muscles are controlled by the cerebellum.

answer: your large intestine is about five feet (or 1.5 meters) long. the large intestine is much broader than the small intestine and takes a much straighter path through your belly

explanation: the small intestine also is known as small bowel, which is around 20 feet long while large intestine which is also called colon or large bowel, is only 1.5 m long in size. being the part of our digestive system, they differ in their structure as well in their functions too