CMD 377 Lecture Notes - Lecture 5: Inferior Frontal Gyrus, Precentral Gyrus, Dorsal Root Ganglion

• School: URI
• Department: Communicative Disorders
• Course: CMD 377
• Professor: Kim Mikyong

Document Summary

Any neuron or nerve cell process located outside the bony confines of the skull and vertebral column. Includes: cranial nerves (12 pairs, spinal nerves (31 pairs, dorsal root ganglia and peripheral branches, portions of the ans. Ganglia: masses of neuronal cell bodies in the cns (basal ganglia) Nerve: a bundle of axons; a collection of nerve fibers, communicates information between the cns and the outer body, called a tract in the cns. Somatic division: carries information to/from muscles and skeletal framework. Visceral division: (autonomic ns: carries information to/from internal organs, parasympathetic ns, sympathetic ns. Both divisions have two types of fibers: afferent (sensory): carry information away from the given structure (usually toward the cns, efferent (motor): carry impulses to the given structure (usually away from the cns) Spinal nerves: 31 pairs of spinal nerves, spinal nerves rise form the following areas of the spinal cord.