ANP 1105 Lecture Notes - Lecture 21: Multipolar Neuron, Myelin, Blastomere
Central nervous system: brain & spinal cord, peripheral nervous system: nerves. Both the neurons and the glia have the soma which contains the nucleus and most of the organelles. They have processes that come out of the soma, like big extensions; vary in size, structure. The functions of neurons is to process and transmit information, and the function of glia is to support them in a variety of ways. More glia than neurons in the human body. Soma = body of the neuron, extensions that branch of the soma (dendrites) Dendrites = where neuron receives its signals. Axon = tail of a neuron (vary in size), where distance of the signal gets travelled, can connect to other muscles, tissues, dendrites. Axon terminal = endings by which axons make synaptic contacts with other nerve cells or with effector cells (muscle or gland cells) Axon hillock = acts as a bridge b/w the cell body and the axon.