1 This drug may have the effect of speeding up your heart rate. 2  I worry about the effect that violent movies may have on children. 3  Certain chemicals have been banned because of their damaging effect on the environment.  It's important to protect your skin from the harmful effects of the sun.
The CSF from all theses sources , as well as any formed in the central canal of the spinal cord, escapes from the fourth ventricle into the subarachnoid space through the median aperture (of Magendie) and lateral aperture (of Luschka).
A good example of laminar and turbulent flow is the rising smoke from a cigarette. The smoke initially. travels in smooth, straight lines (laminar flow) then starts to âwaveâ back and forth (transition flow) and. finally seems to randomly mix (turbulent flow).