12 Questions
Which sensory pathway consists of smaller sensory neurons with unmyelinated or thinly myelinated axons?
Spinothalamic tract
Where do the peripheral large-fiber projections of the dorsal root ganglia transmit the sensations of vibration, proprioception, kinesthesia, pressure, and fine touch?
Posterior columns
Where do the sensory impulses travel to the sensory cortex of the brain via one of two pathways?
Thalamus
Where do the secondary neurons in the small-fiber spinothalamic tract synapse with secondary neurons?
Posterior horn
What relays impulses from skin, mucous membranes, muscles, tendons, and viscera that travel through peripheral projections into the posterior root ganglia?
Complex system of sensory receptors
Where do the peripheral projections relay impulses into before directing them centrally into the spinal cord?
Posterior root ganglia
Which type of neuropathy in diabetic patients is associated with sharp, burning, or shooting foot pain?
Small-fiber neuropathy
At which level do the fibers projecting from the secondary neurons cross to the opposite side?
Medullary level
Which area in the thalamus is responsible for perceiving the general quality of sensation (e.g., pain, cold, pleasant, unpleasant)?
Face area
What type of reflex is associated with the biceps muscle?
Supinator (brachioradialis) reflex
Which sensory neurons send impulses from the thalamus to the sensory cortex of the brain for full perception?
Tertiary neurons
Which type of sensory pathway is responsible for transmitting information related to pain and temperature?
Spinothalamic tract
Test your knowledge about the complex system of sensory receptors and the relay of impulses from various parts of the body to the sensory cortex of the brain. This quiz covers the pathways through which sensory impulses travel and their processing in the central nervous system.
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