PS263 Study Guide - Angiogenesis, Polydipsia, Cochlear Nerve
Document Summary
Bonus: biopsych rap video- full gpa bonus point. The neuron doctrine: neurons are the fundamental structural and functional unit of the nervous system (cajal)(he was very self-absorbed/narcissistic)first brain tissue transplants. Reticular theory: neurons are continuous with each other and form a diffuse nervous network (golgi) It makes sense that the nervous system is billions of independent but connected units, and not just one big net. Neurons unstained all look basically the same, greyish-whitish. When stained we can identify them, tell if they are diseased, what they do or should do. Neurons: specialized cells for reception, conduction, and transmission of electrochemical signals, many sizes and shapes, can transmit messages long distances. Soma: contains genetic information, basically the same for most cells. Dendrites: thin branch like extensions (dendritic spines), allows for synaptic transmission. Axon: conducts the action potential to the end point (muscle, gland etc)
