Biol 261 Exam 1 2007 w A

Biol 261 Exam 1 2007 w A - Biology/ANNB 261 Exam 1 Name_...

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Biology/ANNB 261 Exam 1 Name_________________________ Fall, 2007 1. The study of how the nervous system coordinates stereotypical types of responses, such as the response to a stressful situation (increased heart rate, dilation of the pupils, hypersensitivity to various stimuli like touch and sound), is an example of the level of analysis employed by a) Molecular neuroscientists b) Cellular neuroscientists c) Systems neuroscientists d) Behavioral neuroscientists e) Genetic neuroscientists 2. Bell and Magendie’s experiments a) Demonstrated separate pathways for sensory and motor information b) Involved lesioning the central nervous system (CNS) c) Demonstrated localization of function in the cerebral cortex d) Utilized fluorescent microscopy to study sensory pathways e) More than one of the above is correct. 3. All of the following are types of glia EXCEPT a) Astrocytes b) Ependymal cells c) Oligodendroglia d) Schwann cells e) Microglia 4. The “neuron doctrine” a) Was proposed by Golgi. b) Was supportive of the reticular theory. c) States that the neurites of neurons are not continuous with one another. d) Was refuted by Cajal. e) Is a primitive way of communications based on a simple reflex arc described by Descartes. 5. The three components of the cytoskeleton of a neuron are a) Actin, myosin, troponin. b) Microtubules, neurofilaments, neurofibrillaries. c) Neurofilaments, actin, microtubules (microfilaments are made from actin) d) Golgi apparatus, neurofilaments, neurotubules. e) neurofilaments, neurotubules, microfilaments. 6. This organelle is a major site of synthesis of proteins (e.g., neurotransmitter receptors) destined for the plasma membrane. a) Rough ER. b) Smooth ER. c) Golgi apparatus. d) Mitochondrion. e) Nucleolus.
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7. Which of the following statements about axoplasmic transport is true? a) It is dependent upon glial uptake of selected ions. b) Slow transport is usually associated with small vesicles whereas fast transport is associated with large vesicles. c) “Fast” transport speed can occur as fast as 1 cm/day. d) It can occur in both directions, that is, from the soma to the terminal and from the terminal to the soma. e) Provides a means of ion exchange between adjacent axons at axoaxonic synapses. 8. Which of the following cells would be likely to myelinate an axon in your leg? a) Microglia b) Astrocytes c) Schwann cell d) Oligodendroglia e) Golgi Type II glial cell 9. Some sensory neurons consist only of a soma and two neurites. We might classify such neurons as a) Bipolar b) Unipolar c) Multipolar d) Noradrenergic e) None of the above 10. Postmortem examination of the brain of an Alzheimer’s disease patient reveals the presence of neurofibrillary tangles in certain areas. These are believed to be caused by a) Entanglements of rough ER b) Neurofilament degradation c) Degeneration of microfilaments d) Disregulation of beta-amyloid e) Disregulation of a microtubule-associated protein (MAP) 11. Which of the following is NOT thought to be a function of astrocytes?
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Biol 261 Exam 1 2007 w A - Biology/ANNB 261 Exam 1 Name_...

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