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PowerPoint® Clickers Slides Questions prepared by Mark Hollier, Georgia Perimeter College Clarkston Campus CHAPTER 13 The Peripheral Nervous System and Reflex Activity © Annie Leibovitz/Contact Press Images © 2013 Pearson Education, Inc. ______ are stimulated when sound waves vibrate hair cells in the inner ear. a) b) c) d) Mechanoreceptors Thermoreceptors Photoreceptors Nociceptors © 2013 Pearson Education, Inc. ______ are stimulated when sound waves vibrate hair cells in the inner ear. a) b) c) d) Mechanoreceptors Thermoreceptors Photoreceptors Nociceptors © 2013 Pearson Education, Inc. Which of the following pairs of receptors appear to play complementary roles in hairy and hairless skin? a) b) c) d) Tactile discs and lamellar corpuscles Bulbous corpuscles and hair follicle receptors Tendon organs and tactile corpuscles Tactile corpuscles and hair follicle receptors © 2013 Pearson Education, Inc. Which of the following pairs of receptors appear to play complementary roles in hairy and hairless skin? a) b) c) d) Tactile discs and lamellar corpuscles Bulbous corpuscles and hair follicle receptors Tendon organs and tactile corpuscles Tactile corpuscles and hair follicle receptors © 2013 Pearson Education, Inc. At which level of the somatosensory system are conscious decisions made about low-grade touch stimuli? a) b) c) d) Receptor level Circuit level Perceptual level Effector level © 2013 Pearson Education, Inc. At which level of the somatosensory system are conscious decisions made about low-grade touch stimuli? a) b) c) d) Receptor level Circuit level Perceptual level Effector level © 2013 Pearson Education, Inc. When you first enter a movie theater, the smell of popcorn overwhelms you. Once the movie has ended, however, you don't notice the popcorn smell. You have experienced ________. a) b) c) d) phasic sensation tonic sensation generator sensation adaptation © 2013 Pearson Education, Inc. When you first enter a movie theater, the smell of popcorn overwhelms you. Once the movie has ended, however, you don't notice the popcorn smell. You have experienced ________. a) b) c) d) phasic sensation tonic sensation generator sensation adaptation © 2013 Pearson Education, Inc. An intensely painful stimulus is distinguished from a mildly painful one by _______. a) b) c) d) a higher frequency of action potentials initiated higher-magnitude action potentials an increased number of receptors stimulated all of the above © 2013 Pearson Education, Inc. An intensely painful stimulus is distinguished from a mildly painful one by _______. a) b) c) d) a higher frequency of action potentials initiated higher-magnitude action potentials an increased number of receptors stimulated all of the above © 2013 Pearson Education, Inc. Ganglia associated with efferent nerve fibers mostly contain cell bodies of ______. a) b) c) d) autonomic sensory neurons somatic sensory neurons autonomic motor neurons somatic motor neurons © 2013 Pearson Education, Inc. Ganglia associated with efferent nerve fibers mostly contain cell bodies of ______. a) b) c) d) autonomic sensory neurons somatic sensory neurons autonomic motor neurons somatic motor neurons © 2013 Pearson Education, Inc. The perineurium ______. a) b) c) d) encloses all the fascicles to form a nerve surrounds axons and Schwann cells binds groups of fibers into bundles contains sensory neurons only © 2013 Pearson Education, Inc. The perineurium ______. a) b) c) d) encloses all the fascicles to form a nerve surrounds axons and Schwann cells binds groups of fibers into bundles contains sensory neurons only © 2013 Pearson Education, Inc. CNS and PNS neurons differ in their regeneration capability, mainly because ______. a) b) c) d) PNS neurons are associated with supporting cells that promote rapid cleanup and regrowth of new axons CNS neurons are associated with oligodendrocytes that contain growth-inhibiting proteins The statement is not true; neither PNS nor CNS neurons are capable of axon regeneration. Both a and b are true. © 2013 Pearson Education, Inc. CNS and PNS neurons differ in their regeneration capability, mainly because ______. a) b) c) d) PNS neurons are associated with supporting cells that promote rapid cleanup and regrowth of new axons CNS neurons are associated with oligodendrocytes that contain growth-inhibiting proteins The statement is not true; neither PNS nor CNS neurons are capable of axon regeneration. Both a and b are true. © 2013 Pearson Education, Inc. Which cranial nerve is the exception and travels to the thoracic and abdominal cavities? a) b) c) d) Trochlear Trigeminal Vestibulocochlear Vagus © 2013 Pearson Education, Inc. Which cranial nerve is the exception and travels to the thoracic and abdominal cavities? a) b) c) d) Trochlear Trigeminal Vestibulocochlear Vagus © 2013 Pearson Education, Inc. Which of the following cranial nerves has both sensory and motor functions? a) b) c) d) Facial Trochlear Hypoglossal Accessory © 2013 Pearson Education, Inc. Which of the following cranial nerves has both sensory and motor functions? a) b) c) d) Facial Trochlear Hypoglossal Accessory © 2013 Pearson Education, Inc. The dorsal roots along the spinal cord contain _______ neurons, while the dorsal rami contain ________ neurons. a) b) c) d) motor; motor sensory; mixed sensory; motor motor; mixed © 2013 Pearson Education, Inc. The dorsal roots along the spinal cord contain _______ neurons, while the dorsal rami contain ________ neurons. a) b) c) d) motor; motor sensory; mixed sensory; motor motor; mixed © 2013 Pearson Education, Inc. Predict the outcome of damage to one cord of the left brachial plexus. a) b) c) d) Only a portion of the left limb will suffer reduced function. The entire left limb will be paralyzed. The entire right limb will be paralyzed. Only a portion of the right limb will suffer reduced function. © 2013 Pearson Education, Inc. Predict the outcome of damage to one cord of the left brachial plexus. a) b) c) d) Only a portion of the left limb will suffer reduced function. The entire left limb will be paralyzed. The entire right limb will be paralyzed. Only a portion of the right limb will suffer reduced function. © 2013 Pearson Education, Inc. If irritated, this nerve will cause hiccups. a) b) c) d) Cervical plexus Cutaneous nerve Phrenic nerve Lesser occipital nerve © 2013 Pearson Education, Inc. If irritated, this nerve will cause hiccups. a) b) c) d) Cervical plexus Cutaneous nerve Phrenic nerve Lesser occipital nerve © 2013 Pearson Education, Inc. A physician can determine the approximate location of a spinal injury simply by testing areas of the skin for numbness. These skin areas are referred to as ______. a) b) c) d) dermatomes cutaneous areas dermozones cutaneous zones © 2013 Pearson Education, Inc. A physician can determine the approximate location of a spinal injury simply by testing areas of the skin for numbness. These skin areas are referred to as ______. a) b) c) d) dermatomes cutaneous areas dermozones cutaneous zones © 2013 Pearson Education, Inc. For conscious muscle movements, activity of the ______ is required. a) b) c) d) precommand areas central program generators reflex arc indirect system © 2013 Pearson Education, Inc. For conscious muscle movements, activity of the ______ is required. a) b) c) d) precommand areas central program generators reflex arc indirect system © 2013 Pearson Education, Inc. Which precommand structure inhibits various motor centers of the brain? a) b) c) d) Cerebellum Brain stem nuclei Spinal cord Basal nuclei © 2013 Pearson Education, Inc. Which precommand structure inhibits various motor centers of the brain? a) b) c) d) Cerebellum Brain stem nuclei Spinal cord Basal nuclei © 2013 Pearson Education, Inc. Quickly lifting your foot and leg after stepping on a rock is an example of a(n) ________. a) b) c) d) learned reflex intrinsic reflex voluntary action central program generator © 2013 Pearson Education, Inc. Quickly lifting your foot and leg after stepping on a rock is an example of a(n) ________. a) b) c) d) learned reflex intrinsic reflex voluntary action central program generator © 2013 Pearson Education, Inc. The length of a muscle is communicated to the brain via a __________. a) b) c) d) tendon organ nociceptor muscle spindle lamellar corpuscle © 2013 Pearson Education, Inc. The length of a muscle is communicated to the brain via a __________. a) b) c) d) tendon organ nociceptor muscle spindle lamellar corpuscle © 2013 Pearson Education, Inc. A tendon reflex involves ______. a) b) c) d) muscle contraction and shortening muscle relaxation and lengthening muscle contraction and lengthening muscle relaxation and shortening © 2013 Pearson Education, Inc. A tendon reflex involves ______. a) b) c) d) muscle contraction and shortening muscle relaxation and lengthening muscle contraction and lengthening muscle relaxation and shortening © 2013 Pearson Education, Inc. The crossed-extensor reflex is important when ______. a) b) c) d) someone taps on your patellar tendon a bright light shines in your eyes you overextend your leg during the long jump you step barefoot on a sharp object © 2013 Pearson Education, Inc. The crossed-extensor reflex is important when ______. a) b) c) d) someone taps on your patellar tendon a bright light shines in your eyes you overextend your leg during the long jump you step barefoot on a sharp object © 2013 Pearson Education, Inc.