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6. Which of the following sub-modalities is not processed by the somatosensory system?

  • Temperature
  • Touch
  • Head motion
  • Nociception

7. Which of the Brodmann's areas in the primary somatic sensory cortex contains neurones with more complex receptor fields?

  • 1
  • 2
  • 3a
  • 3b
  • 4

8. In the homunculus, the body areas are represented with regards to what?

  • Tactile Sensitivity
  • Skin Area

9. What is the function of the dorsal horn of the spinal cord?

  • Sensory
  • Motor

10. Which of the following is not true for rapidly adapting receptors and is true for ONLY slowly adapting receptors?

  • It characterised by a burst of action potentials which rapidly decays
  • It is part of a peripheral mechanism to inhibit sensory information so the brain is not overloaded
  • The receptor encodes the duration and intensity of stimuli
  • The receptor encodes the dynamic features of stimuli

11. What information does the dorsal column system NOT convey?

  • Vibration
  • Pain
  • Proprioception
  • Fine (discriminative) touch

12. What mechanism do the centre/surround receptor fields exhibit? (These receptor fields are present in the dorsal column nuclei and thalamic neurones

  • Medial Excitation
  • Medial Inhibtion
  • Lateral Inhibition
  • Lateral Excitation

13. Where is the VPL nucleus located?

  • Brainstem
  • Thalamus
  • Cerebral Cortex
  • Spinal cord
  • Hypothalamus

14. The gracile nucleus conveys sensory information from the?

  • Lower limbs and lower trunk
  • Neck, upper limbs and upper trunk

15. Where are receptor fields smallest?

  • Where the surface area of the skin is large
  • Where the least discrimination is required
  • Where the most discrimination is required
  • Where the surface area of the skin is smal

16. Which rexed laminae surrounds the central canal of the spinal cord?

  • X
  • I to VI
  • VII
  • VII to IX

17. As the sensory pathways ascend, the receptor fields of the neurones become...?

  • More complex and smaller
  • More complex and larger
  • Less complex and larger
  • Less complex and smaller

18. Which of the following do mechanoreceptors and chemorecptors have in common?

  • When unstimulated, the ion channel is closed
  • The ion channel is also the receptor
  • The stimulus acts directly on the ion channel
  • The stimulus is the binding of a molecule

19. How is the modality of a stimuli represented by the electrical 'code' generated by the peripheral receptors in response to a stimuli?

  • By the duration of the action potential
  • By different types of sensory receptor and different sensory pathways
  • By the mean frequency of action potentials
  • By the localised area in which the receptor can be activated

20. Which of the muscle and joint mechanoreceptors is responsible for the detection of joint position and movement?

  • Golgi tendon organ
  • Joint capsule
  • Muscle spindle secondary
  • Muscle spindle primary