chap 42 sensory systems

chap 42 sensory systems - Name: _ Class: _ Date: _ ID: A...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chap 42 Sensory Systems Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Bats, by emitting high-pitched sounds, can detect distant objects via: a. olfaction. b. echolocation. c. lateral line organs. d. sensory adaptation. e. ommatidia. ____ 2. To prevent a shipwreck, submarines determine where objects are positioned under water using sonar, sound waves. This method of detection is similar to: a. a snake using thermoreceptors to locate its prey. b. a shark using lateral line receptors to locate its prey. c. a frog using mating calls to locate a female. d. an earthworm being able to determine its position underground using a statocyst. e. a bat using echolocation to hunt prey. ____ 3. Sensory receptors: a. transduce the energy of a stimulus into electrical signals. b. are specialized neuron endings or specialized cells in close contact with neurons. c. operate by opening or closing ion channels in the plasma membrane. d. depolarize in response to a stimulus. e. All of these. ____ 4. Which of the following correctly describes the order of events that occur when you touch a very hot surface? 1) action potential 2) stimulus 3) receptor potential 4) transduction into electrical energy a. 1 3 4 2 b. 2 1 4 3 c. 2 4 3 1 d. 4 1 3 2 e. 3 1 4 2 ____ 5. Sensory receptors: a. produce internal environmental stimuli. b. convert stimulus energy to chemical energy. c. maintain a constantly hyperpolarized plasma membrane. d. produce a small amount of energy on a continual basis. e. produce action potentials of varying amplitudes in response to stimuli of differing intensities.
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Name: ________________________ ID: A 2 ____ 6. Some sensory receptors decrease their frequency of action potentials when exposed to a continued, constant stimulus in a process known as: a. transduction. b. sensory adaptation. c. referred perception. d. reception. e. sensory summation. ____ 7. After working several hours in a flower shop, you do not detect the smell of the roses. Why? a. Sensory adaptation has occurred. b. Stimulus transduction has increased. c. Sensory perception has been blocked. d. Sensory summation has occurred. e. The nasal epithelium has become blocked. ____ 8. Since all action potentials are essentially the same, how can one differentiate visual and auditory stimuli? a. The amplitude of each action potential is characteristic of the specific neuron transmitting it to the brain. b. The length of time each stimulus takes to travel to the brain for interpretation varies. c. Receptor potentials are graded. d.
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This note was uploaded on 10/27/2011 for the course BIO 101 taught by Professor Martin during the Spring '08 term at Rutgers.

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chap 42 sensory systems - Name: _ Class: _ Date: _ ID: A...

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