PSY 220 Lecture 1: Lecture 1

• School: University of Miami
• Department: Psychology
• Course: PSY 220
• Professor: Hurwitz Barry

Document Summary

Cns (central nervous system) : brain and spinal cord and is comprised of two kinds of cells, neurons and glia. Somatic: function: body movement, nevers intervene muscles. Autonomic, then we have sympathetic and parasympathetic. Neurons: shape of the neuron determines its connection with other neurons and its contribution to the nervous system, structure. Dendritic spines: further branch out and increase the surface area of the dendrite. Soma: cell body, it has nucleus, mitochondria ( performs metabolic activities, priding the energy that cellbases for all activities. Mylien is the layer that forms around nerves. Its purpose is to speed the tansmission of impulses along the nerve cells: multiple sclerosis, ( central nervous system) Loss of conduction velocity and energy efficiency, resulting in impaired coordinated movement and widespread motor, sensory and cognitive symptomatology. A similar disease of the pns is guillain-barre syndrome: motor neuron. Receive excitation from other neurons and conducts impulses along the axon to a muscle: sensory neuron.