Functions of the BBB. The BBB has several important functions: 1  Protects the brain from foreign substances in the blood that may injure the brain. 2  Protects the brain from hormones and neurotransmitters in the rest of the body.unctions of the BBB. The BBB has several important functions: 1  Protects the brain from foreign substances in the blood that may injure the brain. 2  Protects the brain from hormones and neurotransmitters in the rest of the body.
About North Georgia. Leaf change brings thousands of people into the north Georgia mountains every year. In response to a number of inquiries, we have come up with our tips on observing the beauty of this yearly show of color and our favorite places to witness this splendid time of the year. The optimum time to see the leaf change in the north Georgia mountains is normally the last weekend in October.
There'll be outlier trees-- I've seen sick trees drop their leaves in August, and leafed deciduous trees in January as far north as Manhattan-- but there's a clear peak. In tropical climates, there's more variation in when the trees drop their leaves: it has to do with wet and dry seasons, soil quality, wind and elevation. To get a view that looks like autumn in Mexico, for example, you have to go into the mountains.