60 Reduced acetylcholine in Alzheimer’s disease is

60 Reduced acetylcholine in Alzheimer’s disease is due to deficiency of acetylcholine esterase enzyme . True False 1 points 61 Chorea type of movements are a. quick and jerky. b. seen in Huntington’s disease. c. due to deficiency of neurotransmitter GABA d. Both (a) and (b) are CORRECT. e. All of the above are CORRECT. 1 points 62 Hypothalamus a. contains nuclei that produce ADH. b. is a control center for autonomic N.S. c. contains thirst and hunger center. d. Only (b) and (c) are CORRECT. e. All of the above are CORRECT. 1 points 63 A neurotransmitter that allows chloride ions to enter postsynaptic cell causes a. No change in membrane potential, as only Na+ and K+ ions are involved in neuronal action potential. b. inhibitory post synaptic potential as membrane becomes hyperpolarized . c. excitatory post-synaptic potential (EPSP), because begins to depolarize. d. inactivation of the enzymes that break down neurotransmitter. 1 points 64 Which of the following about excitatory neurotransmitters is INCORRECT? a. They can worsen the symptoms of some neurological disorders. b. NMDA receptor antagoinist can act as neuroprotectants. c. Toxicity is caused by increase in calcium within the neurons. d. Over stimulation of NMDA receptors can cause neuronal death. e. None of the above is INCORRECT. 1 points 65 Symptoms of Parkinson’s disease include 1. mask like faces 2. bradykinesia 3. choreiform movement 4. Postural changes a. Only 1, 2 and 3 are CORRECT. b. Only 1, 2 and 4 are CORRECT. c. Only 1 and 2 are CORRECT. d. Only 2 and 4 are CORRECT. e. All of the above are CORRECT. 1 points 66 When depolarization in a neuron reaches the axon terminal of a pre synaptic neuron, next event is a. binding of neurotransmitter vesicles to the cell membrane b. Diffusion of Ca++ into pre synaptic neuron from extra cellular fluid c. uptake of neurotransmitter from the synaptic cleft d. Binding of neurotransmitter to the receptor. 1 points 67 All of the following are detrimental effects of beta amyloid plaque in Alzheimer’s disease EXCEPT a. Inflammation b. Deficiency of acetylcholine esterase enzyme c. Increased excitotoxicity d. Increased formation of free radicals 1 points 68 Billy, a 10 years old boy was hit by a baseball. Because of a short period of dizziness, he sat on a bench and resumes the game after 20 mins. After an hour Billy complained of a headache and appeared confused. His mother took him to emergency. Which of the following is true for his symptoms? a. Epidural hematoma b. Acute Subdural hematoma c. Chronic subdural hematoma SCIENCE HEALTH SCIENCE NURSING BIO 3120

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