Several types of mechanoreceptors are present in the skin.Two of the types are called phasic and tonic.Which of the following statements best describes the difference in phasic and tonic receptors?
A)Phasic receptors are located on body surfaces that contain hair.Tonic receptors are located on body surfaces that do not contain hair.
B)Phasic receptors are located on body surfaces that do not contain hair,such as palms and soles.Tonic receptors are located near the surface of the skin.
C)Phasic receptors are thermoreceptors that detect cold.Tonic receptors are thermoreceptors that detect heat.
D)Phasic receptors are a special type of pain receptors located in the skin.Tonic receptors are special types of pain receptors located within the body.
E)Phasic receptors receive impulses in phases or waves.Tonic receptors receive impulses that are dynamic,in other words ever changing impulses,such as vibrations.

Question

Quizplus · Accepted Answer

Phasic receptors are rapidly adapting receptors that are sensitive to changes in stimuli, such as pressure or vibration, and are located on body surfaces that do not have hair, such as the palms and soles. Tonic receptors, on the other hand, are slowly adapting receptors that respond to a constant level of stimuli, such as sustained pressure, and are located in deeper layers of the skin. They are not necessarily located near the surface of the skin.

Several Types of Mechanoreceptors Are Present in the Skin