uptick - a transaction in the stock market at a price above the price of the preceding transaction. transaction, dealing, dealings - the act of transacting within or between groups (as carrying on commercial activities); no transactions are possible without him; he has always been honest is his dealings with me.
Physiologically, the function of the brain is to exert centralized control over the other organs of the body. The brain acts on the rest of the body both by generating patterns of muscle activity and by driving the secretion of chemicals called hormones.
1 BRAIN STEM: The part of the brain that connects to the spinal cord. 2  The brain stem controls functions basic to the survival of all animals, such as heart rate, breathing, digesting foods, and sleeping.