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Sensory Receptor Adaptation Quiz

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Questions and Answers

What is the primary function of rapidly adapting (phasic) receptors?

Provide continuous information about stimulus intensity.

Inform the CNS about the start, duration, and end of a stimulus. (correct)

Measure the strength of a constant stimulus.

Assist in detecting prolonged stimuli.

How do slowly adapting (tonic) receptors respond to stimuli?

They respond only to novel stimuli.

They stop discharging impulses after initial stimulation.

They continue discharging impulses at a slow, steady rate as long as the stimulus is applied. (correct)

They initiate discharge at a high rate for a short period.

What is adaptation in the context of receptors?

A change in the type of receptor activating.

A decline in action potential frequency in response to constant stimulation. (correct)

An increase in action potential frequency over time.

The ability to detect new stimuli only.

Which of the following is an example of a slowly adapting receptor?

Pain receptors Signup and view all the answers

What is one important role of slowly adapting (tonic) receptors?

Providing continuous information to the CNS for body functions. Signup and view all the answers

Which receptor type adapts quickly to prevent persistent sensations?

Touch receptors Signup and view all the answers

What contributes to the readjustment in receptor structure during adaptation?

Change in generator potential Signup and view all the answers

Which mechanism is responsible for the decrease in receptor potential and action potential discharge?

Accommodation of nerve fiber terminals Signup and view all the answers

What phenomenon describes the change in photosensitive pigment concentration in photoreceptors?

Photoreceptor adaptation Signup and view all the answers

How does stimulus energy dissipate during receptor adaptation?

By spreading and losing energy into surrounding tissues Signup and view all the answers

Study Notes

Sensory Receptor Adaptation

Sensory receptors adapt, meaning the frequency of action potentials decreases when a stimulus is constant
The rate of adaptation varies among receptors
Rapidly adapting receptors:
- Start discharging at a high rate and then decrease rapidly
- Example: touch receptors
- Function: signal the start and end of a stimulus
Slowly adapting receptors:
- Continue discharging impulses at a slow rate without decline
- Example: muscle spindles, Golgi tendon organs
- Function: provide continuous sensory info about stimuli such as body posture

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Description

Test your knowledge on sensory receptor adaptation, including the differences between rapidly and slowly adapting receptors. Learn how these receptors function and their importance in processing sensory information. This quiz will help you understand the mechanisms behind sensory perception.