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3 3 5. Which of the following correctly describes the firing of neurons? (AP94) (A) A protoplasmic transfer of ions (B) A finely graded response (C) An all-or-none response (D) An osmotic process (E) A symbiotic function 3 21. Activation of the sympathetic branch of the autonomic nervous system results in (AP94) (A) An increase in salivation (B) An increase in digestion (C) An increase in respiratory rate (D) A decrease in heart rate (E) A decrease in pupil dilation 3 67. The primary effect of the myelin sheath is to (AP94) (A) Increase the velocity of conduction of the action potential along the axon (B) Increase the velocity of conduction of the action potential across the synapse (C) Facilitate the incoming stimulus signals at sensory receptors (D) Reduce the amount of unused neurotransmitter in the synaptic cleft (E) Protect the terminal buttons of the neuron from destruction by enzymes 3 92. Which of the following occurs when a neuron is stimulated to its threshold? (A) The movement of sodium and potassium ions across the membrane creates an action potential. (AP99) (B) The neuron hyperpolarizes. (C) Neurotransmitters are released from the dendrites. (D) The absolute refractory period of the neuron prevents it from responding. (E) The neuron's equilibrium potential is reached. 3 86. The role of the parasympathetic division of the autonomic nervous system is to (AP99) (A) Facilitate the body's fight-or-flight response (B) Prepare the body to cope with stress (C) Promote rapid cognitive processing (D) Prompt the body to use its resources in responding to environmental stimuli (E) Establish homeostasis after a fight-or-flight response 3 26. Which of the following are most involved in the action potential of a neuron? (AP04) (A) Calcium and sodium (B) Sodium and potassium (C) Potassium and calcium (D) Chloride and calcium (E) Chloride and sodium 4 10. Painkilling substances produced by the brain are known as (AP94) (A) cortisols Page 1 (B) Endorphins (C) glucocorticoids (D) Pheromones (E) Hormones 4 or 3 44. Dopamine, norepinephrine, and acetylcholine are all (AP94) (A) Hormones excreted by the endocrine glands (B) Secretions of the exocrine glands (C) Drugs used in the therapeutic treatment of memory disorders (D) Enzymes involved with the degradation of interneuron signals (E) Neurotransmitters that excite or inhibit a neural signal across a synapse 34 6. Which of the following is considered the fundamental building block of the nervous system? (AP04) (A)Nucleus (B)Neuron (C)Synapse (D)Neurotransmitter (E)Electrical impulse 4 10. Painkilling substances produced by the brain are known as (AP94) (A) cortisols (B) Endorphins (C) glucocorticoids (D) Pheromones (E) Hormones 4 38. The occipital lobes contain (AP94) (A) The primary visual cortex (B) The prefrontal cortex (C) The somatosensory cortex (D) The pons (E) Sensory and motor connections to other brain Regions 4 or 3 44. Dopamine, norepinephrine, and acetylcholine are all (AP94) (A) Hormones excreted by the endocrine glands (B) Secretions of the exocrine glands (C) Drugs used in the therapeutic treatment of memory disorders (D) Enzymes involved with the degradation of interneuron signals (E) Neurotransmitters that excite or inhibit a neural signal across a synapse 4 77. Which of the following allows the examination of living brain tissue visually without performing surgery? (AP94) (A) Computerized axial tomography (B) Stereotaxic examination (C) Retrograde degeneration Page 2 (D) Biofeedback (E) Ablation 4 86. For most people, which of the following is an activity based in the right hemisphere of the brain? (AP94) (A) Muscular control of the right hand (B) Simple spatial reasoning (C) Arithmetic reasoning (D) Language comprehension (E) Speech 4 or 30 89. Which of the following is true of the reticular activating system? (AP94) (A) It is the major system in the brain for controlling emotions. (B) It functions primarily in the control of motor responses. (C) It regulates levels of arousal. (D) It regulates body temperature. (E) It controls the uptake of pituitary hormones. 4 100. The thalamus processes information for all of the following senses EXCEPT (AP99) (A) Smell (B) Hearing (C) Taste (D) Vision 4 10. Which of the following parts of the brain is most active in decision-making? (AP99) (A) Reticular formation (B) Corpus callosum (C) Hypothalamus (D) Cerebral cortex (E) Pituitary gland 4 79. Which of the following is a brain-imaging technique that produces the most detailed picture of brain structure? (AP99) (A) Electroencephalography (EEG) (B) Magnetic resonance imaging (MRI) (C) Positron emission tomography (PET) (D) Computerized axial tomography (CAT) (E) Electromyography (EMG) 4 71. People who have experienced severe damage to the frontal lobe of the brain seldom regain their ability to (AP99) (A) Make and carry out plans (B) Recognize visual patterns (C) Process auditory information (D) Process olfactory information (E) Integrate their multiple personalities Page 3 4 84. Stimulation of portions of the left temporal lobe of the brain during surgery will cause the patient to (AP99) (A) See lights (B) Lose the sense of smell (C) Jerk the left arm (D) Extend the tongue (E) Hear sounds] 4 83. Which of the following areas of the body has the largest number of sensory neurons? (AP99) (A) Back (B) Foot (C) Ear (D) Lips (E) Wrist 4 16. Neurosurgeons cut the corpus callosum in the brain disrupting communication between the right and left hemispheres to(AP04) (A) Prevent the spread of epileptic seizures (B) Reduce anxiety attacks and phobic reactions (C) Reduce the incidence of violent behaviors (D) Treat schizophrenia (E) Reduce mood swings 4 or 21 28. Which component of the limbic system has an essential role in the formation of new memories? (AP04) (A) Amygdala (B) Hippocampus (C) Pituitary gland (D) Hypothalamus (E) Thalamus 4 20. A person who has a brain injury is having difficulty seeing and hearing. These symptoms indicate that damage has occurred in the (AP04) (A) Parietal and occipital lobes (B) Occipital and temporal lobes (C) Frontal and temporal lobes (D) Temporal lobe only (E) Frontal lobe only 4 76. A researcher studies the effects of brain lesions in rats. This research study reflects which of the following perspectives? (AP04) (A) Cognitive (B) Biological (C) Behavioral Page 4 (D) Humanistic (E) Psychoanalytic 4 or 42? 74. Prozac functions as an antidepressant medication because it (AP04) (A) Enhances production of acetylcholine (B) Blocks the reuptake of the neurotransmitter serotonin (C) Causes select memory loss for depression producing events (D) Produces a steady, mild state of euphoria (E) Inhibits frontal lobe activity related to depression 4 50. The human brain differs from the brains of most other animals by the relative amount of brain mass devoted to which of the following? (AP04) (A) The occipital lobe (B) The cerebellum (C) The cerebral cortex (D) The homunculus (E) The pituitary gland 4 91. Which of the following neurotransmitters is most directly associated with Alzheimer’s disease? (AP04) (A) Dopamine (B) Serotonin (C) Gamma-aminobutyric acid (GABA) (D) Acetylcholine (ACh) (E) Glutamate 4 or 26 56. Which of the following structures of the brain has been linked with the regulation of hunger and thirst? (AP04) (A) (B) (C) (D) (E) Probably in brain section24 or 4 70. For most people, speech functions are primarily localized in the (AP99) (A) Right cerebral hemisphere (B) Left cerebral hemisphere (C) Occipital lobe (D) Corpus callosum (E) Cerebellum 5 5 23. A genetically programmed action pattern is the ethologist's definition of (AP99) (A) Habit (B) Instinct Page 5 (C) Adaptation (D) Altruism (E) Releasing mechanism 5 30. The result of the evolutionary process that preserves traits that enhance the adaptation of an organism and suppresses traits that do not is called (AP99) (A) Habituation (B) Accommodation (C) Natural selection (D) Eugenics (E) Species assimilation 5 58. Assume that R represents a dominant gene in rats for normal running and that r represents a recessive gene in rats for an abnormal gait called waltzing. Mating a female Rr rat with a male RR rat will produce offspring that are (AP99) (A) 50% runners and 50% waltzers (B) 25% runners and 75% waltzers (C) 75% runners and 25% waltzers (D) 100% waltzers (E) 100% runners 5 81. The evolutionary perspective (sociobiology) argues that (AP04) (A) Humans are motivated by a desire to maintain optimum hormonal levels (B) Humans are genetically programmed to ensure that there is a new generation of the species (C) Humans strive to minimize inconsistent thoughts and actions (D) There is a relationship among task difficulty, physical arousal, and task performance (E) Conditioning explains most human behavior 5 41. Which of the following reflects the inborn and stable rudiments of personality, such as excitability? (AP04) (A) Imprinting (B) Social referencing (C) Individuation (D) Temperament (E) Accommodation Page 6