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Sensory Receptors
202 - Neurophysio
| Question | Answer |
|---|---|
| 1. Which receptors never adapt completely? | Pain Receptors |
| 2. Which receptors alert us to changes in sensory stimuli are in part responsible so that we can cease paying attention to a constant stimulus? | Pacinian Corpuscles |
| 3. If a BP cuff is inflated and kept at 200 mmHg, you suddenly feel pins and needles in your hand, the free nerve endings are stimulated due to which of the following? | Obstruction of Normal Blood Flow |
| 4. When a wisp of cotton is swiped over your arms while your eyes are closed, which sensory receptors receive the stimulus? | Exteroreceptors |
| 5. Which of the following pertains to a condition when a set of neurons send stimulatory signals to the spinal cord and another set to the antagonistic muscles of the leg? | Reciprocal Inhibition Circuit |
| 6. When the spinothalamic neurons receive sensory and pain afferents from the skin and internal organs and results to hypersensitivity, it is known as: | Convergence from multiple sources |
| 7. This is classified as a slowly adapting receptor: | Tonic |
| 8. Which receptors are located within internal organs? | Visceroreceptors |
| 9. Central receptors include which of the following functions: | Vision |
| 10. Peripheral Receptors include which of the following functions: | Thermal |
| 11. Receptors that adapt completely in 2 days: | Aortic baroreceptors |
| 12. An example of a receptor that detects damage to a structure: | Free Nerve Endings |
| 13. A change in blood pressure is an example of: | Perception |
| 14. Thirst is an example of: | Sensation |
| 15. The state of awareness of a stimuli is a definition of: | Awareness |
| 16. The process whereby a structure in the CNS receives an action potential and converts it to a response: | Translation |
| 17. This is defined as any change in the environment that can generate an impulse: | Stimulus |
| 18. Which of the following is not an example of a complex receptor? | Touch |
| 19. The feeling of fullness is carried out by which of the following receptors? | Visceroreceptors |
| 20. Proprioceptors are responsible for: | Body movement and Limb position |
| 21. Hair base receptors are classified as: | Phasic |
| 22. Ruffini’s ending are classified as: | Skin tactile sensibilities and Deep tissue sensibilities |
| 23. The Labelled line principle is exemplified by which statement? | The specificity of a nerve fiber to carry only one modality of sensation regardless of the kind of stimulus |
| 24. The sensitivity of rods and cones to light but almost nonresponsive to changes in temperature exemplifies what principle: | Differential sensitivity of receptors |
| 25. Group la fibers of the muscle spindles are classified under which of the following? | a-Type A fibers |
| 26. Group III fibers carrying crude touch, pin prick pain and temperature sensations fall under which category of the Physiologit’s classification? | d-Type A fibers |
| 27. Group IV unmyelinated fibers carrying pain, itch, crude touch, and temperature fall under what general classification? | Type C fibers |
| 28. The use of increasing number of parallel fibers to transmit different gradations of intensity is termed as: | Spatial Summation |
| 29. This process is characteristic of the corticospinal pathway in its control of the skeletal muscles: | Amplifying Divergence |
| 30. This is means of transmitting signals of increasing strength by increasing the frequency of nerve impulses in each fiber: | Temporal Summation |
| 31. Most exteroreceptors are classified as: | Phasic |
| 32. A receptor potential is due to the opening of which channel? | Sodium |
| 33. Light, color, odor and touch are examples of: | Stimuli |
| 34. What do sensory receptors have in common? | If stimulated, there is an increase in the positivity in the membrane potential due to entry of Na+ |
| 35. Hair and organs are known to be: | Skin tactile sensibilities |
| 36. Merkel’s Disc are classified as: | Skin tactile sensibilities |
| 37. Aside from the joints, proprioceptors are also found in the following: | Semicircular canals of the inner ear |
| 38. Rods and Cones are classified as: | Exteroreceptors |
| 39. Free Nerve Endings are classified as: | Skin tactile sensibilities and Deep tissue sensibilities |
| 40. Group ib fibers from golgi tendon organs are classified as: | a-Type A fibers |
| 41. The Mechanism of Adaptation occurs through: | - Accommodation in the nerve fiber itself - Readjustment in the structure of the receptor itself |
| 43. What is the area of the skin that is covered by an entire cluster of fibers from one pain fiber, if a pin prick is delivered, in what part is the stimulation greatly felt? | Central part |
| 44. What process is involved when a signal is transmitted into 2 directions from a neuronal pool? | Divergence into multiple tracts |
| 45. Receptors found in joints and muscles: | Proprioceptors |
| 46. Which of type of circuit is important in preventing over activity in many parts of the brain? | Inhibitory Circuity |
| 47. Baroreceptors: | Pressure |
| 48. Nociceptors: | Free nerve endings |
| 49. Rods and Cones are highly sensitive to: | Light |
| 50. Chemoreceptors: | - Smell - Taste |
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