An axon (from Greek á¼Î¾ÏÎ½ axÅn, Ã¡xÅn), axis is a, long slender projection of a nerve, cell or, neuron that typically conducts electrical impulses away from the'neuron s cell. Body myelinated axons are known as nerve. fibersome types of neurons have no axon and transmit signals from their dendrites. No neuron ever has more than one axon; however in invertebrates such as insects or leeches the axon sometimes consists of several regions that function more or less independently of each other.
Mouth breathing refers to the state of inhaling and exhaling through the mouth. A healthy individual normally breathes through the nose while resting or doing light exercise, and breathes simultaneously through both the nose and mouth during vigorous aerobic exercise, in order to supply sufficient oxygen.
The human mouth. The human mouth. The definition of a mouth is the opening of something, particularly the opening through which a person talks and eats. 1  An example of a mouth is how a person takes in food. 2  An example of a mouth is where a river empties into a larger body of water.