Receptors, Sensations, Perceptions, and Pain

These flashcards cover key concepts related to sensory receptors, sensations, perceptions, pain, and their classifications, aiding in exam preparation.

What are sensory receptors responsible for?

Detecting a stimulus and converting one form of energy to another, acting as interfaces between the CNS and the environments.

What are the three classifications of receptors based on location?

Exteroceptors (external environment), interoceptors (visceral organs), and proprioceptors (position and tension of joints and muscles).

What term refers to the type of stimulus or sensation detected by receptors?

Modality.

What is the difference between sensation and perception?

Sensation is arriving information into the CNS, while perception is the awareness of that sensation.

Which type of receptors are always active and slow to adapt?

Tonic receptors.

Explain what nociceptors detect.

Nociceptors detect pain.

What phenomenon occurs when sensory signals from different body parts converge on the same neuron in the spinal cord?

Referred pain.

How do tactile receptors differ in fields for touch sensitivity?

Tactile receptors in the skin have narrow fields for detailed information, while crude touch has larger fields.

What is the role of central adaptation in sensory processing?

It occurs within the CNS, reducing awareness of constant stimuli even when receptors are active.

What types of chemical stimuli are chemoreceptors sensitive to?

pH, CO2, O2 levels, and chemicals released by damaged tissue.