Which of the stimulus modalities induced the largest amplitude receptor potential in the Pacinian corpuscle?
moderate intensity pressure modality
moderate intensity pressure modality induced a receptor potential of the largest amplitude in the Pacinian corpuscle.
What is the adequate stimulus for a an olfactory receptor?
the adequate stimuli for olfactory receptors are chemicals, typically odorant molecule.
Which receptor type is adapting fast to the adequate stimulus?
All receptors adapt to stimuli. However, at which they adapt varies between slow and fast….Joint Receptors.
| Type (receptive fields) | Adaptation rate | |
|---|---|---|
| Merkel | Type I | Slow |
| Ruffini | Type II | Slow |
| Meissner | Type I | Fast |
| Pacinian Corpuscle | Type II | Fast |
Why did the free nerve ending respond?
Free nerve endings called nociceptors in the skin have a high threshold for mechanical, chemical, or thermal stimuli and respond only when the intensity of these stimuli is high enough to damage tissue. We perceive the input from these receptors as pain. Superficial pain that arises from the skin has two components.
What effect will the increased stimulus intensity have on the frequency of action potentials?
Your answer: The frequency of action potentials increases because the increasing stimulus intensity can trigger more action potentials within the relative refractory period.
How did the action potential at R1 or R2 change as you increased the stimulus voltage?
How did the action potential at R1 (or R2) change as you increased the stimulus voltage above the threshold voltage? The action potential didn’t change as the stimulus voltage increased. This is because once threshold is met, the event it all or none, not graded.
What would be the adequate stimulus for a Nociceptor?
Thus the adequate stimulus for a nociceptor would be one that has the capability to cause pain or discomfort. While most sensory neurons respond best to stimuli of a single sensory modality (e.g., mechanical or thermal), nociceptors can often be activated by stimuli of different modalities (i.e., are polymodal).
How is stimulus strength encoded by action potentials?
Stimulus intensity is coded by: 1) the number of receptors activated (population coding). 2) the frequency of action potentials (frequency coding). Stimulus intensity is coded by: 1) the number of receptors activated (population coding). 2) the frequency of action potentials (frequency coding).
What is adequate stimulus physiology?
the type of stimulus for which a given sensory organ is particularly adapted.
What is the adequate stimulus for muscle spindles and Golgi tendon organs?
What is a Golgi tendon organ? The adequate stimulus for these receptors is change in joint angle.
What is tactile corpuscle function?
The tactile corpuscle is responsible for transmitting the sensations of light touch and low-frequency vibrations from the periphery to the central nervous system.
What is tactile corpuscle?
noun. an oval sense organ made of flattened cells and encapsulated nerve endings, occurring in hairless skin, as the tips of the fingers and toes, and functioning as a touch receptor.