PHYS 1302 Lecture 6: cns-document-1-summary-human-physiology-an-integrated-approach
Document Summary
Neurons link together to form circuits that have specific functions. Plasticity: ability to change circuit connections and function in response to sensory input and past experience. Brain can add new connections when neural stem cells differentiate. Spinal reflexes: reflexes that do not require integration in the brain. Cerebrum allows reasoning and cognition, while the cerebellum allows coordination and balance. Central nervous system (cns) consists of the brain and spinal cord. The cns develops from a hollow tube. Cells that will become the nervous system lie in a flat region called the. As embryo develops, neural plate cells migrate toward midline and soon fuse with each other neural tube. Lumen of neural tube remains hollow and becomes central cavity of cns. Cells lining the neural tube either differentiate into epithelial ependyma or remain as undifferentiated neural stem cells. Outer cell layers of neural tube become neurons and glia of. Neural crest cells become sensory and motor neurons of.
