Psychology 1000 Chapter Notes - Chapter 3: Cerebral Cortex, Hindbrain, Proprioception

• School: Western University
• Department: Psychology
• Course: Psychology 1000
• Professor: Laura Fazakas

Document Summary

Neurons specialized cells that are the basic building blocks of the nervous system. Each neuron has: dendrites branchlike fibres which emerge from the cell body and receive nerve impulses from other neurons o. Cell body controls the vital processes of the cell: axon conducts nerve impulses to adjacent neurons, muscles &glands. Blood-brain barrier a specialized barrier that prevents many substances, including a wide range of toxins, from entering the brain. Resting potential in the electrical activity of neurons, the internal difference of the sodium ions outside of a cell &the negatively charged protein ions inside the cell. All-or-none law action potentials occur at a uniform &maximum intensity or they do not occur at all. Depolarization the reversal of the resting potential of a neuron"s cell membrane that produces the action potential. Absolute refractory period a time of recovery during which a cell membrane is not excitable and cannot generate another action potential.