Colorado Cosmetology Written Practice Exam

Why are sensory nerves important?

1. They control muscle movement

2. They connect the brain to the spinal cord

3. They detect changes in the environment

4. They produce cerebrospinal fluid

The correct answer is: They control muscle movement

Sensory nerves are important because they transmit information about our external environment to the brain. This enables us to experience sensations such as touch, taste, smell, sight, and sound. Option A is the correct answer because sensory nerves do not control muscle movement, they only transmit sensory information to the brain. Option B is incorrect because that is the role of motor nerves, which control muscle movement. Option D is incorrect because that is the role of ependymal cells, not sensory nerves. Option C is the most closely related answer, but it is not entirely accurate as sensory nerves do not detect changes in the environment, but rather they transmit the information to the brain for processing. Overall, option A is the best answer because it accurately describes the function of sensory nerves in transmitting sensory information to the brain.