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Exam 2 Fall 2010 - ZOOL 3204 Fall 2010 Exam 2 Form 002...

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Unformatted text preview: ZOOL 3204 Fall 2010 Exam 2, Form 002 PLEASE DO NOT START UNTIL TOLD TO DO SO! Once you are told to start, please do the following: 1. On the scan-tron, please write your name and student lD# (CWID) in the appropriate sections. After your student ID#, LEAVE A BLANK SPACE and then fill 'in your lab section number as follows: 01 = Tuesdays 8:30 06 = Wednesdays 8:30 . 11 = Thursdays 10:30 02 = Tuesdays 10:30 07 = Wednesdays 12:30 12 = Fridays 8:30 03 = Tuesdays 12:30 08 = Wednesdays 2:30 04 = Tuesdays 2:30 09 = Wednesdays 6:30 05 = Tuesdays 6:30 10 = Thursdays 8230 Be sure to fill in all of the corresponding, circles. This Will allow the TA’s to return your scores in lab. Grades also will be posted on D2L. " 2. On the scan-tron, write “3204” for “Course Number”, and for “Sec.”, write the Form # of this exam (“002”).- 3. There are a total of 45 regular questions on this exam, and each question is worth 2 points unless noted otherwise (100 points total). There are also 2 extra credit questions, each worth 2 points. 4. If you have a question, please raise your hand and we will come to you. 5. When finished, please turn in the scan—tron TO YOUR LAB TA. You can keep this exam copy. 6. Good Luck! Whoa! The! was a good one! try”, Hobbs— just poke his brain right where my finger is." These instructions are given for good reason — failure to follow them could result in up to a 10 point reduction in your grade. *By taking this exam, you consent to OSU’s Commitment to Academic Integrity: “1 will respect OSU’s commitment to academic integrity and uphold the values of honesty and responsibility that preserve our academic community.” Page 1 of 8 1. (4 pts.) Regarding the puncture wound to the right: the initial sensory input is sharp and localized and is called , whereas the more dull, poorly localized, and throbbing , sensory input that becomes apparent later is called . Physiologically, these different inputs are the result of numerous factors including ' : a. visceral pain, referred pain, convergence of sensory neurons b. referred pain, visceral pain, placebo effect c. slow pain, fast ain, lacebo effect ‘fast pain, slow pain, convergence of sensory neurons l 2. (4 pts.) Which of the following is TRUE concerning neuron physiology: Fast axonal transport occurs in all axons Action potentials are produced whengraded potentials reach the axon hillock (trigger zone) and meet the threshold voltage @ Graded potentials can be excitatory or inhibitory ' 4. Long-term potentiationayeakens synapses {J’Wflflj QWA!’ . Synaptic plasticity occurs ' ' ' ' ' mm (Mt “90.) ,1 a. all of the above are TRUE b. none of the abov c, av .- a» d. 3, 4, and 5 are TRUE (e. band 5 are TRUE ( 3. (4 pts.) Given the anatomy, what do we know about the neurons to the right: a. ,. _ . . , . ._ . b. they possess myelin sheaths made by Schwann cells @they are from the peripheral nervous system d. all of the above e. none of the above 4. (4 pts.) In the diagram to the right, which of the following changes would increase sensory acuig of a stimulus carried by one of the three neuron pathways shown: a preventing lateral inhibition from occurring is. increasing the size of “A” c. d. all of the above wou c 1ncrease sensory acuity ' none of the above would increase sensory acuity Page 2 of 8 5. (4 pts.) In the diagram to the right: Xdamage to A would lead to problems with VISIOl'l \damage to C would cause problems with motor outut o. C Is the somatosensory cortex 6. D is responsible for movement coordination c. propagating action potentials d. propagating graded potentials e. moving neurotransmitter across the synapse 7. In the diagram above, “C” is a(n): a a. dendrite b. cell body 0. myelin sheath d. axon hillock (trigger zone) 8. In the diagram above, this is where action potentials are initiated: a.A @ c.C d.D e.E K 9. In the diagram above, release of neurotransmitter occurs here: a.A b.B c.C (11) a 10. This neuroglial cell type is found only in the Central Nervous System (CNS): @ astrocyte (a oligodendrocyte pendymal Cell e. none of the above are found in the CNS Page 3 of 8 11. The voltage-gated membrane channel to the right is important in action potential conduction because it: @ms two gates — one for Na+ passage and one for K+ passage through the membrane ' b. has two gates to allow K+ exit from the cel c_ I only during repolarization 12. is used as a neurotransmitter in the CNS as well as the ‘K PNS: . ABA 4N9 \gultamate 4W9 \1. carbon monoxide ' UN; 's when two or more graded potentials from W neuron combines: spatia summatlon [WW (NE. “NW9 e\long-term potentiation d\.slow-synaptic potentiation 14. Which of the following is TRUE concerning long-term potentiation: :3 't involves the neurotransmitter glutamate it uses both__1\_l.agL channels and Ca++ channels on the _p_o_st_—synaptic cell its main function is to strengthen synapses/ Q e. none of the above are TRUE 15. The structure highlighted to the right is the: , a. eninges c. cranium d. cerebellum e. limbic system 16. Regarding the blood-brain barrier: \ ~ Ian it does permit any biomoleculesto travelbetween the CNS and blood supply Vld dfifikgfih \it is produced by Schwann cells‘0N5 \it requires transport proteins for small gases like 02 and C02 7. The brainstem primarily is important for: fl :.;. ‘ monthmm D coordinating movement» WQMQMHN \ controlling movement ‘d‘ emotion, learning, and memory - (fllrtfn‘mm 18. This structure connects the left and right hemispheres of the brain: \a. cingulate gyrus in basal nuclei a hippocampus Page 4 of 8 '. Which of the following is TRUE concerning resting membrane potentials: ‘V ll cells have them (a they are usually negative (-) {a they depend upon intracellular vs. extracellular concentrations of ions like Na+ and 14+ e 6. none of the above are TRUE WK’ 20. Regarding the sodium—potassium pump (Na+K+ATPase): a. it is only found on neuron cell membranes ' 0. without it, a single action potential would cause enough ion movement to reverse the concentration gradients 0fNa+ and K+ d. all of the above 6. none of the above 21. Which of the following is TRUE concerning graded potentials: ; are produced on a-xens WK on dWh’Rb are all-or—noen VO‘I theypusaa—l-ly involve the movement of K+ . L Mon at. 22. In the diagram to the right, the event marked by step “4” is primarily caused by: a. potassium (K+) leaving the cell b. potassium (K+) entering the cell . sodium (N a+) leaving the cell €722; 23. In the diagram to the right, the greatest number of Na+ channels are OPEN at: a. 46239 Time {mass} M Kr 24. Which of the following is TRUE concerning c ’on o ntials: “a. they can exhibit spatial and temporal summationv Madiflvfii 5'“ " -\ they are proportional to stimulus strength' QYQdm \OO‘l’ - . they are propagated along axons by openlng and 0105111gm+ channels 25. This animal has beggar important research model in neurobiology because of its “giant axon”: \ . many-banded rait 0. mouse 01. puffer fish ¥ 26. Which pf the following is the correct sequence of events just PRIOR to neurotransmitter release: exocytos1s of synaptic vesmles 9 depolarization of axon terminal -> Ca++ entry into cell WWCX Page 5 or 8 27. During a physical exam, a 23 year old female shows a plantarflreflexflwhen the physician rubs the reflex _ hammer along the sole of her foot. This is: I - . . ‘1 -, .. , \pawas‘fl‘ V‘ b} t Old -. meiing that could indicate a problem with the cerebellum 2x. something that could indicate a problem with myelin sheaths ‘(Qflm 8‘ unusual, but probably just a vestigial reflex 28. Which of the following tend to be larger in females than in males: 5;? brain regions associated with connectivity (e.g., corpus callosum) 6) brain regions associated with language (e.g., temporal gyrus) abraiurface area “gyrification”) (c9) 3;;ng e 6. none of the above tend to be larger in females 29. Concerning learning and memory: a. memory can be divided into short-term and long—term b learning can be divided into associative and non—associative . hormones like en-inehrine and glucocorticoids affect learning and memory e. none of the above 30. The diagram to the right highlights the main components of the: a. hypothalamus b. diencephalon ‘ c. cerebellum 32. Sensory coding of stimulus S GTH usually) depends on: (316 a. the size of the receptive field activated“ \UUQ (m 5:, he number of receptive fields activated the receptor and pathway activatedflipej 31. Sensory coding of stimulus TYPE depends on: ‘a‘the _si_z_e of the receptive field activatedwwhm b‘ the number of receptive fields activated \. the number of action potentials generated WW 33. Which of the 01% W}; is TRUE: ' ‘ QWWN axons with ’ lameter conduct action potentials faster than axons with larger diameter our general, the larger e stimulus intenSIty d. all of the above are true e. none of the above are true , the £ewer action potentials generated 34. The i is involved with sensory integration and filtering whereas the maintenance of homeostasis: ‘13. ta cerebellum-blow (”WWW \Wmhm WM0\\W “WWW Es hypothalamus, thyroid gland \sh limbic system, cerebellum plays a major role in Page 6 of 8 35. The b' k; estdifrefence between bird brains and primate brains is: . he presence of an olfactory bulb in primates but not fish 0. the relative size of the brainstem X36. Gate control theory helps to explain: a the placebo effect \phantom pain \ k. why we experienc g 37. Pacinian corpuscles and Ruffini corpuscles are examples of: “(l0 6 referred pain SK nociceptors EL photoreceptors erning the “placebo effect” 7 is true conc 38. Which of the folowglin it is due to release of the neurotransmitter ACh Kit happens when people have damage to their basal nuclei ‘d‘ all of the above are true \none of the above are true s one of the first to suggest that specific parts of the brain were responsible for specific ‘“ 39. This scientist wa (led up being wrong on the details): cognitive functions and abilities (although he en a. Gelbard Sagiv , \Phineas Gage \Walter Cannon ‘8. Au h ust Krogh 40. NeurogeneSis: flmbe a.\occurs frequently in the PNS butaever in the CNS 6 occurs frequently in the spinal cord but never the brain " occurs frequently in both the PNS and CNS . e. The diagram to the right: b. illustra es raln‘anatomy but not function 0. is generated using a standard X-ray machine (1. all of the above e. none of the above 42. is a medical condition in which face recognition is impaired: he Thatcher Effect c. Receptive aphasia d. Mechanical aphasia Page 7 of 8 43. Somatosensory tracts transmit sensory input into the CNS whereas corticospinal tracts transmit motor commands from the CNS to the PNS: b. false 44. Which of the following are functions of the hypothalamus: . monitoring body temperature eogtmgg, g monitoring body osmolarity m mmolmlhq “om arc nhi hormone secretion for regulating hormone release from the anterior pituitary e. none of the above are unctions of teh hypothalamus 45. Which of the following is TRUE concerning somatosensory input to the brain: . all somatosensory tracts have synapses in the‘thalamus UhMMl'lm WWW) . all somatosensory tracts terminate in the somatosensory cortex some somatosensory tracts have their first synapse in the spinal cord and some have their first synapse in the g medulla obon ata @one of the above are true EXTRA CREDIT (2 pts. each) 46. On October 4“, Robert Edwards won the 2010 Nobel Prize in Medicine for his pioneering work on: .stem cells c. organ and tissue transfer d. synthetic blood e. medical nanoparticles 47. The example I gave in class of “Siegel’s chickens” was used to illustrate: a. an optical illusion b. the Krogh Principle @abituation . sensitization Page 8 of 8 ...
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