MCQ – 91793

Match the receptors with their correct function
1. Ruffini corpuscle              A. Vibration
2. Merkel cells                     B. Sustained pressure
3. Pacinian corpuscle           C. Stretching
4. Meissner’s corpuscle        D. Fine touch

A.	1C 2B 3A 4D
B.	1D 2C 3B 4A
C.	1B 2A 3D 4C
D.	1C 2D 3B 4A

Show Answer

Correct Answer » A Explanation

 

Receptor	Function
1.Ruffini corpuscle	C. Stretching
2.Merkel cells	B. Sustained pressure
3.Pacinian corpuscle	A. Vibration
4.Meissner’s corpuscle	D. Fine touch

1. Ruffini Corpuscle → Stretching (C)

Function

• Detects:
  • Skin stretch
  • Sustained deformation
  • Joint movement

Characteristics

• Slowly adapting receptor
• Located in:
  • Deep dermis
  • Joint capsules

Clinical Importance

Helps in:

• Finger position sense
• Grip modulation

2. Merkel Cells → Sustained Pressure (B)

Function

• Detect:
  • Sustained pressure
  • Texture
  • Form discrimination

Characteristics

• Slowly adapting
• Small receptive field
• Important for fine tactile discrimination

Location

• Basal epidermis

Example

Reading Braille

3. Pacinian Corpuscle → Vibration (A)

Function

• Detects:
  • Deep pressure
  • High-frequency vibration

Characteristics

• Rapidly adapting
• Onion-like lamellar structure
• Very sensitive to vibration

Location

• Deep dermis
• Subcutaneous tissue

4. Meissner’s Corpuscle → Fine Touch (D)

Function

• Detects:
  • Fine touch
  • Flutter
  • Low-frequency vibration

Characteristics

• Rapidly adapting
• Small receptive field

Location

• Glabrous (hairless) skin:
  • Fingertips
  • Lips
  • Palms