Sannus Story free essay sample

B. Leprosy can affect the skin and Schwamm cells of peripheral nerves. Which events of sensation processing are most likely not functioning properly in Sannu’s Leporsy? Sensory neurons send out signals from the peripheral nervous system, so when it is affected by leprosy, the Schwamm cells are not sending the signals out to the sensory imput. C. Were somatic, visceral, or special senses being investigated when Dianna evaluated Sannu’s Achilles and Babinski reflex activity? No, she was just investigating just his somatic and visceral. D. Sannu has lost sensations of pain, temperature, light touch, and pressure. What types of receptor endings mediate the detections of the sensations? By losing sensations of pain, temperature, light touch, and pressure, Sannu has lost encapsulated nerve endings that are receptors for pressure and vibration as well as Free nerve endings which are the receptors for pain, temperature, itch, and some touch sensation. Sannu’s Exteroceptors will be affected by this as well because these receptors are sensitive to what is going on outside the body, such as pain, temperature, pressure, touch, and vibration E. We will write a custom essay sample on Sannus Story or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Leprosy infects the body via the skin, typically in the cooler regions of the body. Based on this information, would Sannu’s interoceptors be affected? Yes, because the interoceptors are to monitor the blood vessels, visceral organs and nervous system. When Sannu lost sensory feeling he is losing part of his nervous system. If the nerves are not reacting to pain, temperature, pressure, touch, and vibration, then this means his nervous system has been affected, which in turn means his interoceptors are affected by this disease. F. Sannu describes pain in his leg. What receptors mediate sensations of pain? What type of pain is Sannu’s â€Å"burning† pain, fast or slow? The burning pain that Sannu describes is a slow pain because it is a pain that increases and intensifies over a period of time, the receptors that mediate this pain is Nociceptors. G. What type of peripheral receptors would be activated in a normal, intact limb to produce the sensations Sannu is experiencing in his â€Å"phantom limb†? The type of receptors that would be activated with a normal intact limb would be proprioceptor, these are in our muscles and tendons and tells us the when and where our muscles and tendons need to contract, this is also includes the proprioceptive sensations which tells us where our head and limbs are and how we move them even if we are not looking at them. H. Sannu has experienced two devastating events: loss of myelination of peripheral nerves and below-the-knee amputation of a leg. Sannu has been experiencing sensations in a limb that had no sensation prior to amputation. How might this be possible? Sannu is experiencing sensations in a limb that had not sensations prior to amputation because the brain and spinal cord continue to send signals like the amputated limb is still there. I. Since Sannu has lost his leg and since sensory input to the somatosensory cortex of the brain will be non-existent, what might happen to the representation of his amputated lag on the somatosensory map? J. Could the loss of input from proprioceptors in the amputated leg affect Sannu’s sense of balance and equilibrium? K. Was the sensory loss that Sannu experienced initially due to interference of central nervous system processing or sensory pathway transmission? L. What damage was done by bacterial infection of the nervous system that led to Sannu’s symptoms? M. What type of receptor should have initially sensed the injury to Sannu’s foot? N. What part of his brain was mediating the odd sensations Sannu felt following the amputation of his foot? O. Is Sannu at any higher risk than anyone else in his village for developing Parkinson disease (which involves changes in the basal nuclei) because of his leprosy infection and symptoms or the amputation?