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Exam 3 Spring 2010 - 0 3E NSC tfl 1(5 pts The diagram to...

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Unformatted text preview: 0 3E NSC tfl 1. (5 pts.) The diagram to the right depicts the pathway into “WW * the brain. From receptor to cortex, there are neurons in sequence, although some pathways have their first synapse in the and others have their first in the 29TH ALAhus a. motor, two, spinal cord, medulla oblongata b. somatic sensory, three, spinal: cord, medulla oblongata c. auditory, three, spinal cord, cerebellum d. somatic sensory, two, medulla oblongata, thalamus . , . , 5 , e. motor, three, medulla oblongata, thalamus ' " i ., _ g g , ~ " £3 hebutcn 2. (5 pts.) Which of the following statements is TRUE regarding the diagram to the right: a Li mas: Mus “(2.7?me 1. “A” is the iris 2. “B” are the lemmas“ fibers (zonules) 3. Contraction of “A” is required for close-up visual acuity 4. Relaxation of “A” causes “B” to be pulled taut and “C” to be elongated (flattened) 5. “A” is made of skeletal muscle 10 N U c. A R a. all of the above are TRUE ‘3 ‘3“ 5 b. none of the above are TRUE c. 2, 3, and 4 are TRUE d. 1, 3, and 5 are TRUE e. 2, 3, 4, and 5 are TRUE 3. (4 pts.) Regarding muscle anatomy: CAID‘ AC P935”? skeletal muscle andsmoot-h—muscle are striated cardiac muscle contains intercalated disks one . smooth muscle has manynuclel per cell skeletal muscle is stimulated by the somatic (motor) nervous system a. all of the above are true b. none of the above are true c. l and 4 are true d. 2 and 4 are true e. l, 2, and 4 are true Page 2 of 8 4. (4 pts.) The above diagram depicts how stimulus strength is, in general, encoded in the sensory nervous system (i.e., stronger stimulus = more neurotransmitter). However, there are exceptions to this simple, positive, linear relationship. Which of the following sensory pathways are exceptions to the general principle illustrated above: a. hearing b.ViSi0n ‘SVHVA'VHET'C Pnzaswrvnwueyxg c. equilibrium ' ' ~‘-:1'."'*~ d. afl of the above are exceptions e. none of the above are exceptions 5. (4 pts.) In the diagram to the right, damage to “A”, a component of the nervous system, would most directly lead to a(n) : a. parasympathetic, decrease in “rest & digest” function b. parasympathetic, decrease in “fight or flight” function 0. sympathetic, loss of sensory input (1. somatic, loss of motor function e. somatic, decrease in “fight or flight” function ‘1 HuSLLE WEEK 6. (4 pts.) In the diagram to the left, 1, 2, 3, 4, and 5, in order, are: "" V a. muscle fiber, myofibril, sarcomere, aefin, myosin ‘ i " ‘ ' b. myofibril, muscle fiber, sarcoplasmic reticulum, myosin, actin c. myofibril, myofilament, sarcomere, actin, myosin (1. muscle fiber, myofibril, sarcomere, troponin, tropomyosin e, muscle fiber, myofilament, sarcolemma, troponin, tropomyosin l. h‘ioe‘blu, (E) 3, Snkcahevté Page 3 of 8 7. Sensory receptors that are free nerve endings include: a. thermoreceptors b. somatosensory nociceptors c. olfactory receptors (1, all of the above e. none of the above 8. Pacinian corpuscles and Ruffini corpuscles are examples of: a. chemoreceptors b. nociceptors c. mechanoreceptors d. photoreceptors 9. Which of the following is true concerning the “placebo effect”: a. it is defined as a measurable physiological or psychological change resulting from the administration of an inert substance or procedure b. it appears to be related to activation of the endogenous opioid system c. it demonstrates how if the brain expects something to happen (e. g., pain relief), sometimes that expectation can translate into a real, neurophysiological result d. all of the above are true e. none of the above are true 10. The gate control theory of pain modulation offers an explanation for how a painful stimulus may be inhibited by additional, non—painful stimulation (e.g., touch) of the surrounding area: a. true b. false 11. Regarding types of pain, which of the following are FALSE: a. fast pain originates from the central nervous system Whereas slow pain originates from the peripheral nervous system b. fast pain is “fast” because it is transmitted Via myelinated axons c. visceral pain is often poorly localized and perceived as pain coming from another body part (referred pain) (1. all of the above are FALSE e. none of the above are FALSE 12. Concerning our sense of taste: a. the primary taste types are sweet, salty, sour, bitter, and umami b. each taste bud has only one-type of taste receptor "‘00 c. taste receptors respond to’a-lhtaste types, but they respond to one more strongly than the Others d. all of the above Owe e. none of the above 13. Concerning olfaction: a. olfactory receptors are hair cells b. olfactory receptors regularly undergo neurogenesis 0. there are five primary “smells”, or olfactory inputs d. all of the above e. none of the above 14. Flehmen behavior is used by males of many mammal species to enhance pheromone detection: a. true b. false Page 4 of 8 a. nociceptors b. taste receptors 0. hair cells é E d. olfactory receptors / .. e. photoreceptors 15. are depicted in the diagram to the right: fl 3231/7, (mi 1 gbjlfl 16. In the diagram to the right, “A” uses to stimulate the , primary sensory neuron whereas “B” uses the neurotransmitter \ 3 ' \ E a. glutamate, acetylcholine (ACh) b. ATP, ACh c. ATP, serotonin d. epinephrine, norepinephrine 17. Which of the following sensory pathways is correct for olfaction: a. olfactory epithelium 9 olfactory bulb 9 thalamus 9 olfactory cortex b. olfactory epithelium 9 olfactory bulb 9 vomeronasal organ 9 olfactory cortex c. olfactory epithelium 9 thalamus 9 olfactory bulb 9 olfactory cortex d. olfactory epithelium 9 olfactory bulb 9 olfactory cortex 18. Which of the following is TRUE: a. taste receptors use either g protein-coupled receptors or channel proteins to detect molecules in solution b. there are ~ 100 or so taste receptors per taste bud c. taste buds occur in clusters on the tongue called fungiform papillae d. all of the above are TRUE e. none of the above are TRUE 19. Lacrimal glands: a. produce aqueous humor N“ 3° *- ACP— ‘ H A L Bur-'1' b. produce vitreous humor - DRAIpS "rungs c. produce tears d. produce hormones “’sz — sows; cnvfl"! ', Prerecr$ ENE 20. All organisms with eyes - human and non-human alike — possess photoreceptors that are wired backwards, pointing away from the lens rather than towards the lens: a. true b. false 21. Different types of photoreceptors detect different wavelengths of light depending on: a. whether they are excitatory or inhibitory 5 Mar: b. where they are located on the retina menu-r n were“ c. the type of photopigment they possess vac/TOP r chum D \ H: (1. none of the above 22. Concerning sensory transduction in the retina: a. light absorption by the photopigment causes Na+ channels on the outer segment of the photoreceptor to close b. light absorption by a photoreceptor leads to a decrease in neurotransmitter release from its synaptic terminal 0. rods function better than cones when light levels are low (1. all of the above are true e. none of the above are true Page 5 of 8 23. The is the region of the that possesses the highest number of cones: a. fovea, retina b. optic disc, retina c. fovea, choroid d. optic disc, choroid 24. Radial and circular smooth muscle are arranged perpendicularly in the to regulate the amount of light entering the eye via : a. iris, pupil diameter b. iris, lens shape c. ciliary body, pupil diameter d. ciliary body, lens shape HUS Put» I. Ave“? at: “at. C (4qu 0?er kav5. be was. seams: CHGRO‘D 50“?“ Questions 25—27 refer to the above diagram 25. a. sclera 26. a. lens 27. a. optic nerve b. cornea b. ciliary body b. oculomotor nerve c. choroid c. iris c. fovea d. retina d. pupil d. optic disc 28. Problems with draining aqueous humor most likely would be due to problems with: a. the lacrimal glands b. the vitreous body c. the Canal of Schlemm d. the nasolacrimal duct 29. Which one of the following is TRUE regarding visual processing: a. the axons of Bipolar cells bundle together and leave the eye, forming the optic nerve QRNGU “'4 sews b. we possess binocular vision over our entire visual field 0. the optic nerve projects to the midbrain where pupil diameter is regulated d. the optic nerve synapses with neurons in the lateral geniculate body (thalamus) which go to the visual cortex Page 6 of 8 gx‘TeRNAL Minot—t; ““th EA‘Z Ea“ EA“- I f ‘ '2 M nch—us . r“ ,7 9 ‘57. Schiemcucaa ' “ ” ' o J, 30. The overall function of B 1s. mcus : ‘93:; a?» Cn~n L s a. sound transduction mum: 2b....“ up}: élgs 3 ~ b. sound collection eve: MAL 'i . ‘73?" ”’ a a l " 0. sound amplification h «:9 Lb ‘ 71 5 ' 31. This structure is the: a. tympanic membrane b. oval window 8‘3: Ffi 0. round window at mes 32. This structure is/are the: “g a. semicircular canals can s b ""M “wuugfig b. organ of Corti c. cochlea in s *r FQH i “"3 \3‘ Tufie. ‘ " 33. A low frequency, loud sound would maximally stimulate hair cells near the of the cochlea and cause them to bend : a. base, widely b. tip, widely c. base, very little WU P "' CH ‘ m? (I. tip, very little H \ GM Prrcn ~ BASE. sub") group! _. Lei-duh) LOUD 34. The cochlea: a. is fluid—filled b. contains the malleus, incus, and stapes c. is the most common site for ear infections d. all of the above e. none of the above 35. Concerning hair cells: a. they are used for hearing and equilibrium b. they release neurotransmitter when at rest 0. when they bend, ion channels open or close d. all of the above 36. If you spin around in place ten times, then try to run forward in a straight line, you Will first stimulate your and then your : a. cochlea, vestibular apparatus b. vestibular apparatus, cochlea c. otolith organs (utricle and saccule), semicircular canals d. semicircular canals, otolith organs (utricle and saccule) “acWA'Hoh-tu. wALK‘uLIFVh-MNQ 37. Step 1 of the stress response (“emergency theory”) is produced by the: a. sympathetic nervous system b. parasympathetic nervous system c. adrenal sympathetic pathway (1. both a and c e. both b and c 38. The majority of autonomic control centers are located in the cerebellum: a. true b. false men an. arms, pews, htbuhbh Page 7 of 8 39. There are numerous similarities between the sympathetic and parasympathetic branches of the nervous system; these similarities include: a. both contain ganglia that are linked together in a “chain” b. both use only one neurotransmitter — ACh c. both use one of the same cranial nerves — the vagus nerve d. all of the above are true e: none of the above are true 40. Because of divergence, there are usually more post-ganglionic than pre—ganglionic autonomic neurons in a given autonomic pathway: a. true is s b. false an. = Post 41. Concerning skeletal muscle: a. fascicles are bundles of muscle fibers held together by a connective tissue wrap called perimysium b. whole muscles (e.g., the biceps) are held together by a connective tissue wrap called epimysium 0. compared to most cell types, skeletal muscle fibers contain lots of mitochondria 61. all of the above e. none of the above 42. Nebulin and titin are: a. myofilaments b. accessory proteins 0. found in sarcomeres d; all of the above e. none of the above 43. In the photomicrograph to the right, this is a: a. muscle fiber b. fascicle c. intercalated disk 01. sarcomere EXTRA CREDIT 44. The “Share the Wealth” presentation in class on March 1St was about: a. nutrition ~healthy eating habits b. the effects of alcohol consumption c. stress management (1. sexual health 45. Which of the following was discussed in this “Share the Wealth” presentation: a. condom use b. alcohol consumption laws in different states in the US. 0. eating. disorders (1. food storage strategies for maximum nutritional benefit 46. In the Friday lecture before Spring Break, Dr. Lovern: 3. passed out candy b. passed out trial packets of sunscreen c. wore Bermuda shorts and a Hawaiian—style shirt d. none of the above Page 8 of 8 ...
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