The tectospinal, vestibulospinal and reticulospinal descend ipsilaterally in the anterior column, but do not synapse across the anterior white commissure.
However, the analgesic effects of acupuncture and morphine were not reversed by naloxone microinjected into the amygdala or the mesencephalic reticular formation. 2 .
The feldspar group contains tectosilicate minerals with similar properties, including orthoclase, albite and labradorite. Feldspars make up more than 60% of the upper crust of the earth.