CNS Exam 2 questions with complete
solutions graded A+
1 Sensory information arriving at one side of the body or head typically reaches the cerebral cortex of
the contralateral side. The axons that cross the midline to accomplish this are the axons of - correct
answer ✔✔2nd order neurons
2. Which pathway carries pain sensation to the cerebrum - correct answer ✔✔Spinothalamic
3. A 63-year-old man has a loss of discriminative touch, vibratory sense, and proprioception on his right
arm. Where are the cell bodies for the second order neurons in the pathway located? - correct answer
✔✔Cuneate Nucleus
Dermatome of the upper arm - correct answer ✔✔C7
Type of Nocioceptor (others?) - correct answer ✔✔Free nerve ending
Stimulus of a Stretch receptor - correct answer ✔✔Muscle Spindle
Follicular Receptor (Others?) - correct answer ✔✔Mechanorecptor
Not encapsulated (find others) - correct answer ✔✔Merkels
For Vibration - correct answer ✔✔Pacinian
Left arm, left leg weakness? (look up) - correct answer ✔✔Right cerebellum?
Which does not contain corticobulber fibers (look up) - correct answer ✔✔Pyramid, lateral
corticospinal?
solutions graded A+
1 Sensory information arriving at one side of the body or head typically reaches the cerebral cortex of
the contralateral side. The axons that cross the midline to accomplish this are the axons of - correct
answer ✔✔2nd order neurons
2. Which pathway carries pain sensation to the cerebrum - correct answer ✔✔Spinothalamic
3. A 63-year-old man has a loss of discriminative touch, vibratory sense, and proprioception on his right
arm. Where are the cell bodies for the second order neurons in the pathway located? - correct answer
✔✔Cuneate Nucleus
Dermatome of the upper arm - correct answer ✔✔C7
Type of Nocioceptor (others?) - correct answer ✔✔Free nerve ending
Stimulus of a Stretch receptor - correct answer ✔✔Muscle Spindle
Follicular Receptor (Others?) - correct answer ✔✔Mechanorecptor
Not encapsulated (find others) - correct answer ✔✔Merkels
For Vibration - correct answer ✔✔Pacinian
Left arm, left leg weakness? (look up) - correct answer ✔✔Right cerebellum?
Which does not contain corticobulber fibers (look up) - correct answer ✔✔Pyramid, lateral
corticospinal?
