Answer:
The central nervous system is made up of the brain and the spinal cord. The brain communicates with the rest of the body through the spinal cord, which runs from the base of the brain all the way down the back. ... Messages travel from the brain into the spinal cord and out to the body's nerves to tell the body what to do.
Explanation:
A+, A-, B+, B-, AB+, AB-, O+, and O
Chromosomes are structures found in the nucleus of most cells. The plural of nucleus is nuclei. organ<span> A </span>group<span> of different tissues that </span>work together<span> to carry out a particular function, eg heart and lungs. </span>organ<span> system A </span>group of organs that work together to complete<span> a specific function.</span>
