Sensory Receptors and Impulses Quiz

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Questions and Answers

Which sensory pathway consists of smaller sensory neurons with unmyelinated or thinly myelinated axons?

  • Medulla
  • Posterior columns
  • Spinothalamic tract (correct)
  • Dorsal root ganglia

Where do the peripheral large-fiber projections of the dorsal root ganglia transmit the sensations of vibration, proprioception, kinesthesia, pressure, and fine touch?

  • Medulla
  • Thalamus
  • Spinothalamic tract
  • Posterior columns (correct)

Where do the sensory impulses travel to the sensory cortex of the brain via one of two pathways?

  • Posterior root ganglia
  • Spinal cord
  • Peripheral projections
  • Thalamus (correct)

Where do the secondary neurons in the small-fiber spinothalamic tract synapse with secondary neurons?

<p>Posterior horn (B)</p> Signup and view all the answers

What relays impulses from skin, mucous membranes, muscles, tendons, and viscera that travel through peripheral projections into the posterior root ganglia?

<p>Complex system of sensory receptors (B)</p> Signup and view all the answers

Where do the peripheral projections relay impulses into before directing them centrally into the spinal cord?

<p>Posterior root ganglia (A)</p> Signup and view all the answers

Which type of neuropathy in diabetic patients is associated with sharp, burning, or shooting foot pain?

<p>Small-fiber neuropathy (B)</p> Signup and view all the answers

At which level do the fibers projecting from the secondary neurons cross to the opposite side?

<p>Medullary level (B)</p> Signup and view all the answers

Which area in the thalamus is responsible for perceiving the general quality of sensation (e.g., pain, cold, pleasant, unpleasant)?

<p>Face area (D)</p> Signup and view all the answers

What type of reflex is associated with the biceps muscle?

<p>Supinator (brachioradialis) reflex (C)</p> Signup and view all the answers

Which sensory neurons send impulses from the thalamus to the sensory cortex of the brain for full perception?

<p>Tertiary neurons (B)</p> Signup and view all the answers

Which type of sensory pathway is responsible for transmitting information related to pain and temperature?

<p>Spinothalamic tract (C)</p> Signup and view all the answers

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