A it does not involve interneurons you answered you

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A. It does not involve interneurons. You Answered You Answered B. It involves excitatory interneurons. C. It involves inhibitory interneurons. D. The e ff ect of the reflex is to create a co- contrac " on of two muscles E. A&D Correct Answer F. B&C Your Answer: 5 / 10 pts Ques ! on 27 Answer 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 that occurs. Include any sensory organs involved and the ac " on of the reflex. 1. sensory nerves that are contained in the dorsal root detect the signal from the hot pan 2. the impulse is then sent to the central nervous system where the integra " on center is located 3. it is then transmi ! ed out as a motor neuron to the e ff ector 4. the e ff ector contracts the muscle in order to move the hand away from the pan Flexor withdrawal reflex: Pain receptor in skin Sensory (a ff erent) neuron through DRG Interneurons in spinal cord: (1) Excitatory to biceps (2) Inhibitory to triceps Submission Details: Time: 46 minutes Current Score: 85 out of 100 Kept Score: 85 out of 100 Home Modules Grades Account Ac " vity Courses Calendar Inbox History Student Dashboard Help
Motor neurons: Contract biceps, inhibit triceps Ac ! on: Elbow flexion pulls hand away from flame. see key Your Answer: 10 / 10 pts Ques ! on 28 Answer the following essay ques ! ons: Mul " ple Sclerosis is an autoimmune disease which a ! acks the myelin sheath of the nerve axon. Pa " ents with this disease may experience di culty using the muscles of their arms and legs. Explain why this would occur. myelin sheath is white fa ! y layers that cover the axon of a neuron, speeding up the impulses. Pa " ents with this diseas could experience di culty using their arms and legs because the motor neurons which send impulses from the CNS to PNS would be slowed down as a result. Myelin sheath covers the axon crea " ng gaps in between called node of ranvier which makes the impulse jump from one to the next. This increases the rates at which the impulses are traveling through the axon. Myelin increases nerve conduc ! on speed and protects the nerve. If the myelin is damaged, the conduc ! on speed would be slower than normal, and the nerve axon itself would be vulnerable to permanent damage without the myelin present for protec ! on. Quiz Score: 85 out of 100 " Previous Next #

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