Small intestinal bacterial overgrowth (SIBO) refers to a condition in which abnormally large numbers of bacteria are present in the small intestine, while the types of bacteria found in the small intestine are more like the bacteria found in the colon.
motor neuron. noun, Cell Biology, Physiology. 1. a nerve cell that conducts impulses to a muscle, gland, or other effector. Also, motoneuron. motor neuron n. A neuron that conveys impulses from the central nervous system to a muscle, gland, or other effector tissue. Discover our greatest slideshows.
1 Medical Definitions: Motor Unit The medical definition of a motor unit is the combination of muscle nerves and muscle fibers that function together to contract. 2  Your whole skeletal system has neurons that iâ¦.