The Somatic Sensory System: Touch and Proprioception

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7. Rapidly adapting fibers are most likely to provide information about the _______ of a stimulus. a. shape b. weight c. texture d. movement e. temperature Answer: d Textbook Reference: Somato... sensory Afferents Convey Different Functional Information 8. Which type of somatosensory afferents transmit information from touch mechanoreceptors to the central nervous system? a. Ia b. II c. Aβ d. Aδ e. C Answer: c Textbook Reference: Somatosensory Afferents Convey Different Functional Information 9. Which afferents have the highest spatial resolution? a. Merkel afferents b. Meissner afferents c. Pacinian afferents d. Ruffini afferents e. Pain afferents Answer: a Textbook Reference: Mechanoreceptors Specialized to Receive Tactile Information 10. Meissner afferents account for about _______ of the mechanosensory innervation of the human hand. a. 10% b. 25% c. 40% d. 75% e. 90% Answer: c Textbook Reference: Mechanoreceptors Specialized to Receive Tactile Information 11. Merkel afferent fibers convey information about which variable(s)? a. Motion detection b. Temperature c. Proprioception d. Shape and texture e. Subtle vibrations Answer: d Textbook Reference: Mechanoreceptors Specialized to Receive Tactile Information 12. The longitudinal lanceolate endings do not respond to a. deflection of the hair by strokes on the skin. b. movement of air over the skin surface. c. sensual touch. d. gentle caress. e. pain. Answer: e Textbook Reference: Mechanoreceptors Specialized to Receive Tactile Information 13. A dermatome is an area innervated by a. fibers of the cells from a single dorsal root ganglion. b. the axon of a single neuron. c. fibers from one spinal cord segment. d. fibers with similar properties. e. fibers of the cells from a single nucleus in the brain stem. Answer: a Textbook Reference: Clinical Applications: Dermatomes 14. Which component of the musculoskeletal system is responsible for force-production? a. Muscle spindle b. Intrafusal muscle fiber c. Extrafusal muscle fiber d. Sensory afferents e. Connective tissue capsule Answer: c Textbook Reference: Mechanoreceptors Specialized for Proprioception [Show More]

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