What is the primary function of a Pacinian corpuscle?
3.6.1.2 Receptors - Pacinian Corpuscles

Quiz
•
Biology
•
12th Grade
•
Easy

Ross Kearns
Used 3+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To detect changes in temperature
To detect mechanical pressure and vibrations
To detect chemical changes
To detect light
Answer explanation
Pacinian corpuscles are specialized mechanoreceptors that primarily detect mechanical pressure and vibrations, making them crucial for sensing changes in touch and texture.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of ion channel is involved in the function of a Pacinian corpuscle?
Voltage-gated calcium channels
Ligand-gated potassium channels
Stretch-mediated sodium ion channels
Proton channels
Answer explanation
Pacinian corpuscles are mechanoreceptors that respond to pressure and vibration. They utilize stretch-mediated sodium ion channels to detect mechanical deformation, making this the correct choice.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a Pacinian corpuscle is stimulated?
It releases neurotransmitters
It establishes a generator potential
It changes colour
It contracts
Answer explanation
When a Pacinian corpuscle is stimulated, it establishes a generator potential, which is a change in membrane potential that can lead to the generation of an action potential, signaling sensory information.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of a generator potential in a Pacinian corpuscle?
To initiate an action potential
To release hormones
To absorb nutrients
To produce sound
Answer explanation
The generator potential in a Pacinian corpuscle is crucial for converting mechanical stimuli into electrical signals, which then initiate an action potential, allowing the nervous system to respond to pressure and vibration.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following best describes the structure of a Pacinian corpuscle?
A flat disc
A layered onion-like structure
A hollow tube
A spherical ball
Answer explanation
A Pacinian corpuscle is best described as a layered onion-like structure, consisting of concentric layers that respond to pressure and vibration, making it distinct from other shapes like a flat disc, hollow tube, or spherical ball.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What specific type of stimulus does a Pacinian corpuscle respond to?
Chemical stimuli
Light stimuli
Mechanical stimuli
Thermal stimuli
Answer explanation
Pacinian corpuscles are specialized mechanoreceptors that respond specifically to mechanical stimuli, such as pressure and vibration, making 'Mechanical stimuli' the correct choice.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the deformation of the Pacinian corpuscle lead to the opening of ion channels?
By changing the temperature
By stretching the membrane
By altering the pH
By releasing enzymes
Answer explanation
The deformation of the Pacinian corpuscle occurs when pressure is applied, which stretches the membrane. This mechanical stretching leads to the opening of ion channels, allowing ions to flow and generate a nerve signal.
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