Clinical neuroanatomy quiz 6

Define alloydynia

• •Increased pain from a stimulus that normally provokes pain​

• •pain due to a stimulus that does not normally provoke pain

• •pain caused by a lesion or disease of the somatosensory nervous system​

• decreased pain from a stimulus that normally provokes pain

Which tract determines how much pain a person perceives?

• •Medial pathway

• •lateral spinothalamic tract

• •descending tracts

• •all of the above

Which part of the spinal cord does information carrying sensation synapse into?

• •Dorsal horn

• •ventral horn

• •lateral horn

• •none of the above

Which fibers carries information for fast pain perception?

• •A delta fibers

• •A beta fibers

• •A gamma fibers

• •C fibers

Where in the spinothalamic tract does the fibers decussate?

• •At the same level of the spinal cord where the information comes in from the dorsal horn

• •Above the level of the spinal cord where the information comes in from the dorsal horn

• •Below the level of the spinal cord where the information comes in from thr dorsal horn

• •At the brainstem

If you perceive pain in your face, which blood vessel in the cortex supplies that part of the homunculi map?

• MCA

• PCA

• ACA

• PICA

The descending pathway that synapses at the substantia gelatinosa does NOT inhibit which of the following?

• •Substance P

• •Endorphins

• •Prostaglandins

• •All of the above

True or false: catecholamines increases nociceptor sensitisation

• True

• False

When you rub your hand after injuring it, the pain is temporarily inhibited this is called the _____ and pain is inhibited through the release of ______

• •Pain gate theory, dopamine

• •Pain inhibition theory, endorphins

• •Pain gate theory, endorphins

• •Pain inhibition theory, dopamine

Which of the following increases pain

• •Increased cortisol

• •Antioxidants

• •Free radicals

• •Decreased prostaglandins