BIOL 1106 Classwork Spring 2019 Lesson 10: The Sensory System (20 points) This graded assignment is subject to the Virginia Tech Honor Code. Sharing or posting any content from this assignment, or using such shared or posted assignment content to answer assignment questions, is a violation of the Virginia Tech Honor Code. Names and email addresses: 1. Jessie Whitmore, [email protected] 2. Bella Ruggiero, [email protected] 3.Kevin Bao, [email protected] Learning Objectives (LO): 2. Explain the 4 steps in conveying sensory information to the CNS. 3. Describe how stimulus-gated ion channels work. 4. Explain the relationship between intensity of stimulus and frequency of action potentials. 5. For each of the special senses, identify the type of sensory receptor, the location of the sensory receptor, and the specific stimuli the receptors respond to. 7. Compare invertebrate and vertebrate eyes. 8. Describe sensory transduction in the vertebrate eye. 9. List examples of uncommon special senses. S1: Apply scientific reasoning to biological problems. Sequence: Information transfer from receptors to CNS LO 2, 3, & 4 1.(4.5pts. .5 pts each) Indicate the correct sequence of events by writing the corresponding number in the blank to the left of each step. Fill in the parentheses using the word bank. Word bank a. Intensity b. Receptor potential c. Perception d. Stimulus-gated ion channels e. Action potential f. Frequency g. Graded h. Sensory ___2__ Transduction: Opening or closing of stimulus-gated channels creates a (receptor potential) , which is a graded potential with an intensity that is correlated to the intensity of the stimulus. __4___ Interpretation: The brain receives the signal from the sensory neuron and creates a (perception) of the stimulus, although it may not always reflect reality accurately. __1___ Stimulation: Stimulus impinges on sensory neuron or its receptor. (Stimulus gated ion channels) respond by opening or closing. ___3__ Transmission: If a receptor potential is large enough, it creates an (action potential) in the sensory neuron. The frequency of the action potential is correlated to the (intensity) of the receptor potential. This graded assignment is subject to the Virginia Tech Honor Code. Sharing or posting any content from this assignment, or using such shared or posted assignment content to answer assignment questions, is a violation of the Virginia Tech Honor Code.
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- Summer '19