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UNCG KIN 292 - Exam 2 Study Guide

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KIN 292 1st Edition Exam # 2 Study Guide1. Exam Two from last semester: For each question, I have given a page reference in the book for the correct answerChapter 5:1. Pg. 1262.Pg. 128 3.Pg. 131 4. n/a 5. pg. 1286. n/a 7. pg. 135 8. pg. 141 9. n/a 10. pg. 14111. pg. 125Chapter 6:12. pg. 157 13. pg. 149 14. pg. 149 15. pg. 154 16. pg. 15417. pg. 154 18. pg. 154 19. pg. 155 20. pg. 154-155 21. pg. 15522. pg. 161Chapter 21:23. pg. 60324. pg. 604 25. pg. 606 26. pg. 608 27. pg. 60928. pg. 613 29. pg. 611 (insulin), 613 (glucagon) 30. pg. 62031. pg. 621 32. pg. 624-625 33.pg. 625Chapter 7:34. pg. 168 35. pg. 168 36. pg. 169 37. pg. 174 38. pg. 18239. pg. 186 (table) 40. pg. 184? / n/a 41. pg. 173 42. pg. 17543. pg. 175Chapter 8:44. pg. 183-184? (This question is not in chapter 8 that I could see. These pages are from chapter 7 and do not give a great explanation for this answer, but it was the closest I could find)45. pg. 198 46. pg. 200 47. pg. 202 48. n/a (I remembered this from lab 3)49. pg. 205 50. pg. 209 51. pg. 207 52. pg. 210 53. pg. 211 54. pg. 211Chapter 10:55. pg. 254 56. pg. 255 57. pg. 256 58. pg. 258 59. pg. 258-260 60. pg. 26161. pg. 262 62. slides 25 and 26 chapter 10 notes 63. pg. 267 64. pg. 26265. n/a 66. pg. 2642.These are the multiple choice questions (relative to the test) from labs 2,3, and 4Lab 2:- Substrates are held in the active site by hydrogen and ionic bonds- The building blocks for peptides are amino acids- Triglycerides: are lipids, dissolve poorly in water, are fats, are digested by lipase- Adding bile to triglycerides increases the surface area of the triglyceridesLab 3:- Receptor potentials: The receptor proteins respond to stimuli, they can trigger an action potential, Odor molecules can act as stimuli.- Functional regions of neuron: secretory region, receiving region, conducting region- The conducting region of the neuron is theaxon- The typical concentration of sodium islower than potassium intracellularly- Which of the following describes a change from the resting membrane potential? a receptor potential, a synaptic potential or an action potential- What effect did increasing the extracellular potassium have on the resting membrane potential?The resting membrane potential became less negative.- What effect did decreasing the extracellular sodium have on the resting membrane potential?Only a small change occurred, because the resting neuron is not very permeable to sodium.- The channels that provide for the movement of potassium in the resting neuron are leakage- Establishing the resting membrane potential requires energy through the use of thesodium potassium pump- A nerve is a bundle of axons- The region on the neuron where action potentials are generated is called thetrigger zone- We describe the regeneration of the action potential down the membrane of the axon ofthe neuron asconduction or propagation- An axon that is more negative than the resting membrane potential is said to behyperpolarized- If an increase in extracellular potassium hyperpolarizes a neuron, which of the following would be correct?It would change the membrane potential to a more negative value.- An action potential requires voltage-gated sodium channels to open and sodium to flow with its electrochemical gradient- To reach threshold, the amount of sodium entering the cell must overcome the potassium exiting- Which of the following blocks voltage-gated sodium channels?tetrodotoxin and lidocaine- Which of the following is used to block pain?Lidocaine- Which of the following occurs first in the generation of an action potential?The membrane depolarizes- Which of the following occurs during depolarization?Sodium flows into the cell.- Which of the following occurs during repolarization?Voltage-gated potassium channels open and some voltage-gated sodium channels inactivate. Potassium flows out of the cell.- Which of the following allow the movement of potassium through the neuronal membrane?leakage channels and voltage-gated potassium channels- Why does the threshold increase when the interval between the stimuli decreases?Some sodium channels have been inactivated and cannot be reopened immediately- During the relative refractory period, another action potential can be generated provided the stimulus is large enough.- When the interval between the stimuli decreases,a second action potential is generateduntil the interval reaches the absolute refractory period- When the stimulus voltage is increased, a greater-than-threshold depolarization results and sodium permeability into the cell increases to overcome the potassium exiting.- A synaptic cleft, or synaptic gap, can be found between a neuron anda gland, another neuron, a muscle cell.- The membrane potential that occurs when neurotransmitters bind to their receptors is calleda postsynaptic potential- The release of neurotransmitter occursat the axon terminal- Which of the following occurs first: An action potential arrives at the axon terminal- At a chemical synapse, the intensity of the stimulus is coded bythe amount of neurotransmitter released and the amount of calcium that enters the axon terminal- When the calcium was removed from the extracellular solution,no neurotransmitter was released- Calcium and magnesium are bothdivalent cations- A single action potential is described asnot graded- A suprathreshold stimulus results inmore action potentials- A depolarizing synaptic potential is also known asan excitatory postsynaptic potential- A weak, subthreshold stimulus will result ina small depolarization at the receiving end of the neuron- An excitatory postsynaptic potential occursat the receiving end of the


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