Why does pain feel different from other physical sensations such as pressure or itch?
a) feeling pain vs. itch or pressure depends on the intensity of the stimulus
b) feeling pain vs. itch or pressure depends on how frequently the sensory neuron fires
c) different kinds of neuron receptors indicate pain, itch, and pressure.
d) there is no difference between pain, itch, and pressure

For the given question, out of the four options

option A) is correct  

Explanation:

Though pressure and pain have different receptors but their structural anatomy is same. Both originate from the same ancestral cells. The only difference to feel pressure and pain is in the stimulus intensity which depends on the action of brain on the basis of level of stimulus.

Moderate or low stimulus results in pressure or itching but when the stimulus is high crossing the threshold or a critical limiting value then we feel the sensation of pain.

violet light has a shorter wavelength than blue light. violet light is scattered more than blue light. however, the human eye is less sensitive to violet than to blue. as a result, we perceive a blue sky instead of a violet sky.

answer: all of the above

a. apply ice to the affected area.

b. administer tylenol (acetaminophen).

c. put a gate across the stairs.

d. apply knee and elbow protectors.