An otter's den is called a holt or couch. Male otters are called dogs, females are called bitches, and their offspring are called pups. The collective nouns for otters are bevy, family, lodge, romp (being descriptive of their often playful nature) or, when in water, raft.
An axon (from Greek á¼Î¾ÏÎ½ 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. Axons are also known as nerve fibers. The function of the axon is to transmit information to different neurons, muscles and glands.
The axon is a key component of nerve cells over which information is transmitted from one part of the neuron (e.g., the cell body) to the terminal regions of the neuron. Axons can be rather long extending up to a meter or so in some human sensory and motor nerve cells.