PSYB32H3 Chapter Notes -Informa, Dan Fouts, Getting Heavier
Document Summary
Segalowitz - little in theories of development that rely on some specific aspect of the developmental pattern of brain growth. Birth - infants brain weighs 1/4 of adult brain. 6 months - brain weights 1/2 of adult brain. Cerebrum - the two connected hemispheres of the brain. Cerebral cortex - the covering layer of the cerebrum that contains the cells that control specific functions, such as seeing, hearing, moving and thinking. As brain develops, front part expands to form the cerebrum which is covered by the cerebral cortex. Neurons - cell in the body"s nervous system (made of cell body, axon and dendrites) Send and receive neural impulses throughout the brain and nervous system. During embryonic period, neurons multiply at rapid pace. After birth, brain increases in size - existing neurons grow and connections between them proliferate. Glial cells - nerve cells that support and protects neurons and serves to encase them in sheaths of myelin.
