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.
Early vitamin B12 cravings include decreased energy: weakness, fatigue, light-headedness, rapid heartbeat (tachycardia), panting; dermatological and dental indictions: pallor, easy bruising, sore tongue, bleeding gums; gastric disturbance: upset stomach, weight loss, diarrhea or constipation.race amounts of vitamin B12 can be found within tempeh, seaweeds and organic plants in specific geographic regions. ** But unless and until these foods are shown consistently to correct vitamin B12 deficiency, vegans should not rely on them as a vitamin B12 source.