Arkansas Esthetician Practice Exam

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What are the primary components of the nervous system?

Heart, lungs, and kidneys
Brain, spinal cord, and nerves
Muscles, tendons, and ligaments
Pancreas, liver, and gallbladder

The correct answer is: Brain, spinal cord, and nerves

The primary components of the nervous system are the brain, spinal cord, and nerves. Option A is incorrect because the heart, lungs, and kidneys are part of the cardiovascular and respiratory systems. Option C is incorrect because muscles, tendons, and ligaments are part of the muscular and skeletal systems. Option D is incorrect because the pancreas, liver, and gallbladder are part of the digestive system. The nervous system is responsible for controlling and coordinating movements, sensation, and bodily processes, while the other systems mentioned perform different functions.