Lecture 5: General Principals of Neurologic Organization

Question 1

upper motor neurons : originate in cortex :: lower motor neurons : terminate / synapse in either ___ or ___

Answer 1

spinal cord / brainstem

Question 2

this tract originates in the primary motor cortex and terminates at multiple levels of the spinal cord

Answer 2

corticospinal

Question 3

this tract originates in the primary motor cortex and crosses over at multiple levels of the brainstem

Answer 3

corticobulbar

Question 4

the fibers of which tract cross over at the individual cranial nerves they will innervate?

Answer 4

corticobulbar

Question 5

muscles of the limbs : unilateral contralateral innervation :: muscles of the head and neck : ___ motor innervation

Answer 5

bilateral

Question 6

this type of sensory receptor involves deep sensations from muscles and joints as well as sense of movement and position

Answer 6

proprioceptors

Question 7

special senses : hearing, vision, taste, smell, balance :: ___ senses : all other sensations

Answer 7

general

Question 8

this 3 order neuron pathway for sensation includes: sensory receptor to brainstem pathway (1st order), brainstem to thalamus pathway (2nd order), thalamus to ___ pathway (3rd order)

Answer 8

primary sensory cortex

Question 9

all sensory information passes through the ___ before reaching the cortex

Answer 9

thalamus

Question 10

name of a collection of nerve cell bodies outside the central nervous system

Answer 10

ganglia