Nervous and Endocrine System
The nervous system is divided into the central nervous system and the peripheral nervous system. The brain and spinal cord is a part of the central nervous system. The peripheral nervous system is made up of neurons that are located in the organs, muscles, and the throughout the body. The neurons are located in both systems and work together to help people think and live. The nervous system has 3 functions: sensory nerves gather information from inside the body and the outside environment. The nerves then carry the information to the brain and spinal cord. Sensory information is processed and interpreted.
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.