ANATOMY 1 Lecture Notes - Lecture 14: East Los Angeles College, Central Nervous System, Reflex Arc
Document Summary
Multipolar: most common; neurons that have one axon and many dendrites; motor & interneurons. Unipolar (pseudo-unipolar): a type of neuron that has only one process attached to the cell body; sensory. Bipolar: neurons that have two cytoplasmic extensions attached to their cell body, one as the axon and the other as the dendrite; retina, olfactory, ear. Sensory=afferent; nerve cells within the nervous system responsible for converting external stimuli from the organism"s environment into internal electrical impulses. Interneurons: create neural circuits, enabling communication between sensory or motor neurons and the central nervous system (cns). Motor=efferent; a nerve cell (neuron) whose cell body is located in the spinal cord and whose fiber (axon) projects outside the spinal cord to directly or indirectly control effector organs, mainly muscles and glands. Glial cells: non-neuronal cells that maintain homeostasis, form myelin, and provide support and protection for neurons in the cns and pns.
