Psych 311 Exam Answered

Psych 311 Exam Answered Why was Descartes' hydraulic model of brain function an important step in modern understanding of the brain? - Answer- This model was a first attempt at providing a physical explanation for behavior Saltatory conduction occurs only in - Answer- myelinated axons ____ neurons control movements and actions of organs - Answer- motor The part of a neuron that contains the nucleus is called the - Answer- soma As Francine slowly lost motor function and suffered increasing sensory deficits, she could almost picture her _____ being destroyed by the MS - Answer- myelin Which of the following is true of axon terminals of neurons? - Answer- they release neurotransmitters from vesicles A(n) ______ would be found bridging between a sensory neuron and a motor neuron in the spinal cord - Answer- interneuron You have been given the task of designing an animal that needs to have an efficient nervous system, and the animal can be no larger than a human. What feature can you include in the animal's nervous system to ensure that it can respond quickly to its environment? - Answer- myelinated axons If you could surgically remove a single neuron from a rat brain and place it on a slide, what structure (s) would you have to destroy? - Answer- synapses The cells that myelinates neurons located outside the brain and spinal cord are called? - Answer- Schwann cells Which of the following lobes is paired with its proper function? - Answer- Frontal Lobe: Executive Function Which of these is not a characteristic of Ionotropic Receptors? - Answer- Secondary Messengers A cut through the longitudinal fissure of the sheep brain will result in what anatomical plane? - Answer- Sagittal What Neurotransmitter system does the above image show? (mesolimbiccortical pathway/ mesostriatal pathway) - Answer- Dopamine The book used by training clinicians to determine what kind of mental disorder a patient has is called - Answer- DSM When the action potential arrives at the terminal button, entry of _____ ions stimulates release of neurotransmitter - Answer- Calcium Which neurotransmitter is important for motor control at the NMJ? - Answer- ACH A brain damage localized to the raphe nuclei would lead to reduced release of which neurotransmitter? - Answer- Serotonin You hypothesize that exposing rodents to chronic stress will result in depression-like behavior. Which task would you use to test this hypothesis? - Answer- Forced Swim test Which ethology of the rat is exploited when conducting the light-dark box test? - Answer- Rats like dark spaces You hypothesize that exposing rodents to forced exercise will result in memory impairment and improved balance. Which pair of tasks will you employ to test this hypothesis? - Answer- Barnes Maze and Rotarod Below is an MRI image of a human brain at the level of the eyes. What plane of view does it depict? - Answer- Transverse (horizontal) Groups of cell bodies in the CNS are called? - Answer- Nuclei In order to best characterize neurons, you needed to stain entire neurons but not every neuron in the rain this can best be accomplished with - Answer- Golgi Stain Which method enables the visualization of minute but specific structural details of a neuron, such as synaptic vesicles? - Answer- Electron Microscopy The ____ is a device used to implant an electrode into the brain. - Answer- Stereotaxic instrument Bundles of axons in the CNS are called - Answer- Tracts Experiments in which a defined part of an animal's Brian is removed and the animal's behavior is observed subsequent to recovery would be termed - Answer- ablation experiments You want to determine if a specific portion of the basal ganglia is involved in swimming behavior in rats. Which technique should he use to proceed the brain damage needed for his study? - Answer- Lesion