Colorado Cosmetology Written Practice Exam

What does the digital nerve do?

1. Controls the movement of the wrist

2. Sends sensory impulses to the fingers

3. Regulates the body's temperature

4. Transmits visual information to the brain

The correct answer is: Controls the movement of the wrist

The digital nerve is a branch of the median and ulnar nerve in the hand that primarily controls the movement of the fingers and thumb. Option A is the correct answer because it specifically mentions the function of the digital nerve. Option B is incorrect because it refers to the sensory impulses of the fingers, which is the function of the digital nerve's branches (palmar digital nerves). Option C is incorrect because the regulation of the body's temperature is mainly controlled by the autonomic nervous system. Option D is incorrect because transmitting visual information to the brain is the function of the optic nerve, not the digital nerve.