A buying hedge is also called a long hedge. Buying hedge means buying a futures contract to hedge a cash position. Dealers, consumers, fabricators, etc, who have taken or intend to take an exposure in the physical market and want to lock-in prices, use the buying hedge strategy. buying hedge is also called a long hedge. Buying hedge means buying a futures contract to hedge a cash position. Dealers, consumers, fabricators, etc, who have taken or intend to take an exposure in the physical market and want to lock-in prices, use the buying hedge strategy.
An excitatory synapse is a synapse in which an action potential in a presynaptic neuron increases the probability of an action potential occurring in a postsynaptic cell. Neurons form networks through which nerve impulses travel, each neuron often making numerous connections with other cells.
The synapse is a small gap separating neurons. The synapse consists of: a presynaptic ending that contains neurotransmitters, mitochondria and other cell organelles, a postsynaptic ending that contains receptor sites for neurotransmitters and, a synaptic cleft or space between the presynaptic and postsynaptic endings. It is about 20nm wide. An action potential cannot cross the synaptic cleft between neurones. Instead the nerve impulse is carried by chemicals called neurotransmitters. These chemicals are made by the cell that is sending the impulse (the pre-synaptic neurone) and stored in synaptic vesicles at the end of the axon.