Bio Questions and Answers Biology and Learning Ch. 49.4 Questions When does the brain start forming? -At embryonic development What are some of the physiological processes involving the brain? (2) -gene expression -signal transduction What is the term called that is related to the changing abilities of the brain? -neuronal plasticity *Refer to page 1094 for description of figure Where does remodeling in the brain take place? -at synapses What are synapses? -junctions between neurons What does the term ?use it or lose it? (referring to the brain) mean? -When synapses are active the response at those synapses strengthens What is memory? -A physiological event occurring at synapses dependent on neuronal plasticity What are the two types of memory?