Each neuron consists of a cell body or perikaryon, from which arise the nerve fibers. And each neuron has two kinds of fibers: a single axon, which conveys nerve impulses away from the cell body, and one or more dendrites, which convey nerve impulses towards the cell body. Neurons are functionally linked by their fibers at connections called synapses. All neurons are post-mitotic.
However, unbalanced vegetarian diets may be lacking in a number of important nutrients. To ensure that you are eating a balanced vegetarian diet, you should regularly consume sources of vitamin B-12, iron, zinc, omega-3 fatty acids and essential amino acids.
Other Nutrients. Although not vitamins, certain other nutrients and minerals are especially important to vegetarians. Vegetable sources of protein are found in beans, nuts and whole grains. In addition to meat, iron can be found in lentils and beans. Vegans may need calcium supplements because the richest calcium sources are milk, yogurt and cheese.