Word: reticent
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Instead. Jefferson agreed with research which suggests that there exists a waking center within some nerve cells in the brain stem and basal ganglia called "retic-ular formations." Sleep comes when this waking center is deactivated, probably by enzymes. But how this happens is unknown...
| 1 |