82. The sneeze reflex is very like the cough reflex EXCEPT that A. The irritant is in the nose B. The reflex is mediated through the medulla of the brain C. The force is usually considerably less D. The carina is the primary focus of reflex activity for the cough alone E. None of the above
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You have been asked to review the ANS and visceral reflexes. Which of the following statements is not associated with the sequence of events that make up visceral reflex arcs?a) Sensory signals from the skin or viscera are transmitted to the brain or spinal cord by sensory afferent neurons.b) Incoming sensory information is integrated and an appropriate motor response is selected by the peripheral nervous system.c) Motor impulses from the CNS are transmitted by efferent neurons, which usually lead to autonomic ganglia.d) Impulses leave autonomic ganglia in efferent neurons, whose axons lead to a variety of target organs.
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Question 4 (2 points) What would happen if all of the minimal required components of a simple arc reflex were present except for the receptor? - The synapses would be doubled. - There would be a longer refractory period. - There would be no initiation process. Question 5 (2 points) Which branch of the ANS would predominate in the following situations? a) Lying on the beach, enjoying the sun and the sounds of the waves. b) On a surfboard and a shark appears within a few feet of you. c) You are living Vd at a music concert with your friends. d) The last day of your exercise preparations for the Iron Man competition. e) Reading a book and sipping on a cup of tea while swaying on a swing. f) In a crowded mall, you walk right into a glass door. Options: a) P, S, S, P, S b) P, S, P, S, P; S c) P, S, S, P, P d) S, S, S, S, P
Which of the following does NOT characterize a reflex? a) Neural integration of a reflex usually occurs in the PNS. b) Reflexes require a stimulus to initiate a motor response. c) A reflex is an automatic response to a stimulus. d) The motor response to a stimulus is rapid.
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