Why are Pacinian corpuscles important for tactile sensation?

Why are Pacinian corpuscles important for tactile sensation?

• A. They detect light touch
• B. They respond to changes in temperature
• C. They sense deep pressure and vibration
• D. They are associated with pain sensation

Answer: (C)

Pacinian corpuscles, also known as lamellar corpuscles, are specialized sensory receptors located deep within the skin and in various tissues throughout the body. Their primary role is to detect mechanical stimuli, particularly deep pressure and vibration. The structure of Pacinian corpuscles is well-suited for this function; they have a layered, onion-like architecture that allows them to rapidly adapt to pressure changes, making them highly responsive to vibrations and strong, sudden pressure. When subjected to mechanical force, the layers produce a change in electrical activity within the nerve fibers, resulting in the perception of these sensations. This ability to detect deep pressure and vibrations is essential for many everyday functions, such as feeling the texture of an object or responding to vibrations in the environment. Therefore, the correct answer highlights their specific role in tactile sensation related to these forces, distinguishing them from other receptors that have different functions, such as those involved in light touch, temperature sensation, or pain.

Pacinian corpuscles, also known as lamellar corpuscles, are specialized sensory receptors located deep within the skin and in various tissues throughout the body. Their primary role is to detect mechanical stimuli, particularly deep pressure and vibration. The structure of Pacinian corpuscles is well-suited for this function; they have a layered, onion-like architecture that allows them to rapidly adapt to pressure changes, making them highly responsive to vibrations and strong, sudden pressure.

When subjected to mechanical force, the layers produce a change in electrical activity within the nerve fibers, resulting in the perception of these sensations. This ability to detect deep pressure and vibrations is essential for many everyday functions, such as feeling the texture of an object or responding to vibrations in the environment. Therefore, the correct answer highlights their specific role in tactile sensation related to these forces, distinguishing them from other receptors that have different functions, such as those involved in light touch, temperature sensation, or pain.