Intro to Neuroscience Exam 1 questions and verified correct answers

animal model - correct answer a scientist's use of animals to examine the process they wish to understand in humans. cell theory - correct answer all tissues are composed of microscopic units called cells. natural selection - correct answer the theory in which a population evolves and changes over time and the population with the more advantageous characteristics has a greater fitness or rate of survival. neuron doctrine - correct answer the concept that the neuron is the elementary functional unit of the brain and that neurons communicate with each other by contact, not continuity. Nissl stain - correct answer a class of basic dyes that stain the somata of neurons. Distinguishes neurons and glia from one another. phrenology - correct answer correlating the structure of the head with personality traits. ventricles - correct answer hollow spaces in the brain where there is fluid. cytosol - correct answer the watery fluid inside the cell; a salty, potassium-rich solution. neurofilament - correct answer a type of intermediate filament found in neurons, 10nm in diameter; an important component of the neuronal cytoskeleton. adenosine triphosphate (ATP) - correct answer the molecule that is the cell's energy source. ribosome - correct answer a cellular organelle that assembles new proteins from amino acids according to the instructions carried by mRNA.