C2 [ I or T ] If you drain something, you remove the liquid from it, usually by pouring it away or allowing it to flow away, and if something drains, liquid flows away or out of it: 1  Drain the pasta thoroughly. 2  We drained the pond and filled it with fresh water. 3  Drain (off) any liquid that is left in the rice.
5. Mitochondrium-this is the part of the cell responsible for the supply of energy in the form of ATP (adenosine triphosphate). Neurons need an enormous amount of energy. The brain is one of the most metabolically active tissues in the body.In man, for example, the brain uses 40 ml of oxygen per minute.t is from here that the electrical firing known as an action potential usually occurs. 5. Nerve Ending (Presynaptic Terminals) Synapses are the junctions formed with other nerve cells where the presynaptic terminal of one cell comes into 'contact' with the postsynaptic membrane of another.
Neuron is the main cell of the Nervous System. It is an electrical excitable cell that is responsible for the transmision of the nerve impulse. With it, they process (in the brain, ganglia and spinal cord) and transmit information. A human brain has 100.000 millions of neurons. It is very similar to other body cells, except for the difference that neurons do not replicate. 2  Axon: it is the longest and most important part of the neuron, it transmit the impulse. 3  A neuron has one only axon.