intro to team based learning

Question 1

what symptoms could indicate damage to the brain stem?

Answer 1

if they involve cranial nerves on one side and the opposite side of the body (so one side of the head and then the opposite side of the body)

Question 2

what would indicate a medial lesion?

Answer 2

if symptoms involve motor cranial nerves and weakness in the body

exceptions include facial, vagus, and mastication, that may be lateral - because motor neurons migrate ventralaterally

Question 3

what would indicate a lateral lesion?

Answer 3

symptoms that involve sensory cranial nerves and loss of pain and temperature sense on the opposite side of the body

Question 4

how would you determine the level of the lesion?

Answer 4

probably at the level of the cranial nerve nucleus and/or its exit from the brain

exceptions:
loss of facial pain and temp. sensation - lesion si in spinal trigeminal tract/nucleus in lateral medulla

weakness of lower face (with preservation of forehead strenght) - above the pons on the contralateral side in corticobulbar tract

Question 5

what would be the result of damage to the dorsal columns/medial lemniscus pathway?

Answer 5

loss of vibratory sense, joint position sense, well-localized touch and pressure
ipsilateral dorsal columns in caudal medulla