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A. It does not involve interneurons. You AnsweredYou AnsweredB. It involves excitatory interneurons. C. It involves inhibitory interneurons. D. The effect of the reflex is to create a co-contrac"on of two musclesE. A&D Correct AnswerF. B&C Your Answer:5 / 10 ptsQues!on 27Answer the following essay ques!ons:You touch a hot pan when cooking. List out the steps,in detail, of the nervous pathway of the reflex thatoccurs. Include any sensory organs involved and theac"on of the reflex.1. sensory nerves that are contained in the dorsal rootdetect the signal from the hot pan2. the impulse is then sent to the central nervoussystem where the integra"on center is located3. it is then transmi!ed out as a motor neuron to theeffector4. the effector contracts the muscle in order to movethe hand away from the panFlexor withdrawal reflex:Pain receptor in skinSensory (afferent) neuron through DRGInterneurons in spinal cord:(1) Excitatory to biceps(2) Inhibitory to tricepsSubmission Details:Time:46 minutesCurrentScore:85 out of100Kept Score:85 out of100HomeModulesGradesAccountAc"vityCoursesCalendarInboxHistoryStudentDashboardHelp
Motor neurons: Contract biceps, inhibittricepsAc!on: Elbow flexion pulls hand away fromflame.see keyYour Answer:10 / 10 ptsQues!on 28Answer the following essay ques!ons:Mul"ple Sclerosis is an autoimmune disease whicha!acks the myelin sheath of the nerve axon. Pa"entswith this disease may experience diﬃculty using themuscles of their arms and legs. Explain why this wouldoccur.myelin sheath is white fa!y layers that cover the axonof a neuron, speeding up the impulses. Pa"ents withthis diseas could experience diﬃculty using their armsand legs because the motor neurons which sendimpulses from the CNS to PNS would be slowed downas a result. Myelin sheath covers the axon crea"ng gapsin between called node of ranvier which makes theimpulse jump from one to the next. This increases therates at which the impulses are traveling through theaxon.Myelin increases nerve conduc!on speed andprotects the nerve. If the myelin is damaged, theconduc!on speed would be slower than normal,and the nerve axon itself would be vulnerableto permanent damage without the myelinpresent for protec!on.Quiz Score: 85out of 100"PreviousNext#