Question

question
all of the following are true of the reticular formation, except:
answer
axons of upper - motor neurons in the reticular formation descend in the reticulospinal tracts.
it is a loosely organized network of neurons that extends throughout the brain stem.
the reticular formation receives input from almost every descending tract, but not from ascending tracts.
it has many connections to the cerebrum, cerebellum, and brain stem nuclei.
i dont know yet

Explanation:

The reticular formation is a complex neural network. It is a loosely - organized network of neurons extending through the brain stem (so the second option is true). Axons of upper - motor neurons in the reticular formation do descend in the reticulospinal tracts (first option is true). It has extensive connections to the cerebrum, cerebellum, and brain stem nuclei (fourth option is true). However, the reticular formation receives input from both ascending and descending tracts, not just descending tracts.

Answer:

The reticular formation receives input from almost every descending tract, but not from ascending tracts.