Anatomy and Physiology -Receptors

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1. How is the distance between receptors related to sensitivity of a stimulus? * The greater the distance between receptors and stimulus the lesser sensitive are the stimulus. The smaller area, the more sensitive. 2. What does the two-point discrimination test measure?

* It measures the smallest distance at which two points of contact can be felt or measures areas that are more sensitive and has more motor interactions. 3. What areas of the body have a greater density of receptors? * Lips, palm of hands, ventral forearm

4. What happens when receptors adapt?
* When a stimulus is applied for a prolonged period, the rate of receptor response slows down and our conscious awareness of the stimulus declines or is lost until some type of stimulus change occurs. 5. Did your experimentation show any indications of adaptation? If yes, how? * Yes.

* In the experiment where I put my left hand in ice cold water for 2 minutes. At first few seconds it is shocking cold and felt painful and then as time goes by, it started to adapt and became numb. 6. What is meant by referred pain? Where was referred pain felt when the elbow was immersed in ice water during the experiment. Have you ever experienced referred pain, if yes, give an example. * Referred pain refers to pain that is felt in part of the body at a distance from the area of pathology. It is pain in the viscera but is felt on the surface. * In the experiment, referred pain is felt in the medial aspect of the hand. * My own experience of referred pain was radiating pain in forehead after quickly swallowing an ice cold Mountain Dew pop. 7. What is it important the pain receptors adapt very little if at all? * It is important for safety and protection. Because if something did not hurt, we would continue to do it eventhough it causes harm to our body. 8. Which lobe of the cerebrum is vital in interpreting the kind and...
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