2006_Muscle - Physiology,r 3-lfi-flfi Exam 1 Student...

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Unformatted text preview: Physiology,r 3-lfi-flfi Exam 1 Student Test Report flu Exam 1 A Course #: Physiology Instructor: Dr. GFEEHE' Course Title: Phsylulug}: Description: Physiology Biomedical Sciences DeyITime: lflflS—Eflflfi Terrru'Tosr: Spring Student Name: — Student 1]}: 517144 Code: Fossib]: Pts How Uh - -'.. ' Fereent I{Tirade tTflD 13-043 Response {dos-I1:- oon‘eet response sea- multiple marks sepaee: no response DESEIiPflDflZ alphabet: etudent'einoorreet response as":- bonus test item Tom's: m 1s” --—--- flH------ Remarks: Directiens: Select the best answer and hlachen the apprepriate space en the answer sheet. Use the fellewing diagram te answer Questien #1. Deg-eve cf Cents-action =' E. :--=;:rl-_-r"-.I-ITEI—IL__—Iu:'_' '. l' .' ' '- -_ :_'-_."- _ his.- : r . . l. The diagram abexe shews: a. actien petentials b. temperal summatien ' spatial summatien d. muscle twitches e- nene cf the abeve 2. The preperty et' excitability pertains te all ef the teller-ring EXCEPT: a. the ability te respend te a stimuli by a change in membrane petential b. slceletal muscle cells c. neurens d. meter end plate er“ patella: tenden 3. When a limb muscle is stretched, which ef the fellewing takes place? a. Greup Ia, Sfiflfiflfjr' afferents frem the stretched muscle spindle, fire and excite the alpha meter neurens te the same muscle. (hf Greup Ia, senserjglr afferents fiem the stretched muscle spindle, fire and excite the gamma meter neurens te the same muscle. ,e'. Grer Ib, Gelgi tenden ergan afferents fiem the stretched muscle, fire and excite the gamma meter neurens te the same muscle. rd.- Greup lb, Gelgi tenden ergan afferents item the stretched muscle, fire and excite the alpha meter neurens te the same muscle. e. Ncne cf the abeve 4. A prepriecepter that senses the ferce that a muscle exerts an its tendens during muscle cenhacfien: a. muscle spindle LE1 Gelgi tenden ergan, c. nuclear chain fiber cl. nuclear bag fiber e. nene ef die abevc 5. The nerveus system eentrels the strength ef eentraetien ef a skeletal musele by all ef the fellewing except: a. varying the tetal number ef meter neurens stimulated, thus ehanging the tetal number ef meter units eentraeting. b. varying the frequeney ef aetien petentials in the meter neuren ef a single meter unit. - e. varying the number efrnusele eells that eentraet within a single meter unit. d. varying the strength ef eentraetien efmueele fibers Within a Single musele spindle Keg inhibiting the eennaetien ef antagenistie museles 6. Which somewhere the myetatie [StretehJ reflex“? [fl 1““ fr . . . a. nue ar bag and nuelear ehain fibfls — primmy a rent - signals enter spinal eerd via ders reet — synapse with meter neurens in ventr em — musele eentraetien bfmusele spindle - la afl‘erents - synapse with interneurens—deseendin g fibers aetivate musele Effielgi tenden ergan r lb afferent - synapse inhibitery interneuren - intemeuren arten aetivates meter neuren - musele eentraetien ~d-r'eutaneeus nerve endings - primary afferent - synapse with eseitatery intemeuren n interneuren arten eresses midline — synapse with meter neuren - musele eentraetien e. nene ef the abeve T. Neeieepters respend te painful stimuli. —I'I—._-—-—.— . True . False 3. The nuelear ehain fibers are the primary seuree ef infennatien abeut hew fast a muscle is ehanging length. a. True Cg. False 9. If the eenneetien between the brain and spinal eerd is severed, the spinal eerd still retains the ability te preduee leeemeter metiens. @ True . . False 111'}. The depelar'iaatien ef individual skeletal musele fibers ean be eempletely bleelted by preventing the release ef aeetyleheline. True it? UseJthediagratnuhelnt-ir to answer questinns #11-__13 -r. . u' '__ u . . . .- . a .vrr .a -.c----:c. c - --- . c- --.=:'----..:-.. ' - - - - '-- " .' ' . -_' . .' -' _ . - .‘.' '--' . ' ' _ . .'.' ' . '. . . ' a- E -E ' a ' . -- -.._ ' . . .' ' . --.. . . .I .. . ._ .h . . . . -- . . . .. .. . . . . _ - _ .--\.. .-|. . - - -.- ."I- __ . _ _ __. . ._-r. .. __ 3.". . -._ ..'|.-. 1 l. A 25-year—cld man is hrnught tn the emergency department after sustaining leg injuries frnm a mctcr vehicle accident. He is unable tn flea his right leg. X-rajr films shew a ccmplete fracture and dislncaticn cf the right femur. Which of the diagrams ahcve best illustrates his cnnditinn‘? a. A h. B c. C d. D e. ncne cf the abnve 12. When stimulated tc ccntract maximally which muscle in the diagram ah-cve will develnp the W? a. A h. B c. C d. El e. nnne cf the ahcve 13. When stimulated tn ccntract maximally which muscle in the diagram abcve will develcp the least ametmt offs-Ice? a. A h. B c. C d. D e. ncne cf the above 14. The latent nit-served during an isnmetric muscle twitch is she-tier than that nhserved during an isntnnie muscle twitch. a. True h. False 15. Shivering will prnduce mere heat than vignrcus muscle cnntractinns. a. True 12:. Fe] se Use the diagram helew tn answer questinns #16 and 1?: Hair-flight 'l'U LWF‘Rf“ 16. If the musele is passively streteherl and released print tn reaehing the lenglh shnwn at paint “2” tetanus will intern. a. True 13. False IT. The nurse labeled “I " illustrates the relatienship between rnusele length and the arnennt at three that a musele ean develep when it is stimulated ta eentraet. EL True h. False At the time you eamplete and hand in this test , ynu have the aptiaa nf enmpIeting nne extra credit shnrt answer essa}; questinn. Please request the separate answer sheet when ynn hand in year test. ...
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This test prep was uploaded on 04/08/2008 for the course PHYS 500 taught by Professor Greene during the Spring '06 term at Philadelphia College of Osteopathic Medicine.

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2006_Muscle - Physiology,r 3-lfi-flfi Exam 1 Student...

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