PSY290H5 Chapter Notes - Chapter 2: Central Sulcus, Anterior Cerebral Artery, Choroid Plexus
Document Summary
Chapter 2: functional neuroanatomy- the nervous system and behaviour. Neuron or nerve cells: the basic unit of the nervous system, each composed of a cell body, receptive extension(s) (dendrites), and a transmitting extension (axon) They underlie the simplest and the most complex of our abilities and talents. Each neuron receives inputs from many others, integrates those inputs, and then distributes the processed info to other neurons (100-150 billion of these tiny info processing units into an immense array of circuits. Nonneural brain cells that provide structural, nutritional and other types of support to the brain. Cajal proposed that although neurons come very close to one another (they are contigous), they are not quite continuous with one another. He insisted that at each point of contact between neurons a tiny gap keeps the cells separate. The neuron has four structural divisions specialized for information processing. Mitochondrion: a cellular central structure of a cell that contains the chromosomes.
