Neurotransmitters are chemicals synthesized in neuron and bloodstream and move to distal sites where they functions by transmitting signals across a synaptic junction, from one neuron to another.
Neurotransmitters are the chemicals that are released from the axon terminals of the pre-synaptic neurons of the synapse. These chemicals have receptors at the surface of the dendrites of postsynaptic neurons of the synapse. Binding of neurotransmitters to their receptors brings about the excitatory or inhibitory effect on the postsynaptic neuron. Accordingly, the action potential is fired. In this way, electrical signals are passed from one neuron to the next at the synapse. Acetylcholine is an example of neurotransmitters.
Infected cells create and release small proteins known as interferons, which help the immune system fight viruses. Interferons stop viruses from replicating by interfering with their ability to multiply within infected cells.
<span>The condition of not being able to speak is called aphasia. Aphasia is an inability to comprehend language because of damage brain caused by the low supply of blood to the brain. People having this may not just lose their ability to speak but also the ability to read and write. </span>
Glucose and oxygen are changed into energy and carbon dioxide, so carbon dioxide are released into the atmosphere during the process of cellular respiration.
