Campbell Biology
12th Edition
ISBN: 9780135188743
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 50, Problem 50.6CR
Which of the following sensory receptors is incorrectly paired with its category?
- (A) hair cell—mechanoreceptor
- (B) snake pit organ—thermoreceptor
- (C) taste receptor—chemoreceptor
- (D) olfactory receptor—electromagnetic receptor
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Which of the following statements about sensory systems is NOT true?
a. Sensory transduction involves the conversion (by either a direct or indirect mechanism) of a physical or chemical stimulus into changes in membrane potential difference.
b. Sensory adaptation plays a role in the ability of organisms to discriminate between important and unimportant information.
c. The term "sensory adaptation" refers to the process by which a sensory cell becomes less sensitive, or less responsive, to a continuing source of stimulation.
d. In general, a stimulus causes a change in the flow of charged ions across the plasma membrane of a sensory receptor cell.
e. The more intense a stimulus is, the greater the peak depolarization of the action potentials fired by the sensory neuron.
Sensory receptor cells transduce physical or chemical stimuli:
a) by limiting action potentials
b) from chemical to electrical energy
c) from an action potential into a synaptic potential
d) by summing incoming action potentials
e) into a change in the membrane potential of the sensory receptor cells
NO 1 (a) Enumerates five sensory receptors?
Chapter 50 Solutions
Campbell Biology
Ch. 50.1 - Prob. 1CCCh. 50.1 - Prob. 2CCCh. 50.1 - Prob. 3CCCh. 50.2 - How are otoliths adaptive for burrowing mammals,...Ch. 50.2 - Prob. 2CCCh. 50.2 - Prob. 3CCCh. 50.2 - Prob. 4CCCh. 50.3 - Contrast the light-detecting organs of planarians...Ch. 50.3 - Prob. 2CCCh. 50.3 - Prob. 3CC
Ch. 50.3 - Prob. 4CCCh. 50.4 - Explain why some taste receptor cells arid all...Ch. 50.4 - Prob. 2CCCh. 50.4 - Prob. 3CCCh. 50.5 - Contrast the role of Ca2+ in the contraction of a...Ch. 50.5 - Prob. 2CCCh. 50.5 - Prob. 3CCCh. 50.6 - Contrast swimming and flying in terms of the main...Ch. 50.6 - MAKE CONNECTIONS. Peristalsis contributes to the...Ch. 50.6 - WHAT IF? When using your arms to lower yourself...Ch. 50 - Sensory receptors transduce stimulus energy and...Ch. 50 - How are music volume and pitch encoded in signals...Ch. 50 - Prob. 50.3CRCh. 50 - Prob. 50.4CRCh. 50 - What are two major functions of ATP hydrolysis in...Ch. 50 - Which of the following sensory receptors is...Ch. 50 - The middle ear converts (A) air pressure waves to...Ch. 50 - Prob. 2TYUCh. 50 - Prob. 3TYUCh. 50 - Prob. 4TYUCh. 50 - Although some sharks close their eyes just before...Ch. 50 - Prob. 6TYUCh. 50 - EVOLUTION CONNECTION In general, locomotion on...Ch. 50 - Prob. 8TYUCh. 50 - WRITE ABOUT A THEME: ORGANIZATION In a short essay...Ch. 50 - SYNTHESIZE YOUR KNOWLEDGE Bloodhounds, which are...Ch. 50 - If an egg rolls out of the nest, a mother greylag...
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- Read the following articles and answer the questions below: Stage 1: Reception and the Receptive FieldQ1) Electromagnetic radiation emitted by the LCD display is detected by which type of sensory receptors in the dragonfly?a) thermoreceptors b) chemoreceptors c) photoreceptors d) mechanoreceptors Q2) What component of a sensory receptor determines its spectral sensitivity, that is, the ability to detect varying wavelengths of light?a) amplification via 2nd messenger cascadesb) opsin photopigmentsc) stereocilia of the outer segmentd) capillary beds providing nourishment to the retina Q3) The capability to resolve rapid changes of light over time and to discriminate adjacent points of light in space are respectively referred to as?a) adaptation and adjustable lens refraction (accommodation) b) contrast sensitivity and thresholding of the visual systemc) temporal and spatial resolution (acuity) of the visual system d) scotopic and phototopic vision regimes The ‘receptive field’ of a…arrow_forwardAlthough all sensory receptors are specific for one type of stimulus, they all produce the same output signal. What is this signal?arrow_forwardWhich of the following statements about olfactory receptors is not true? A Stronger odours cause more olfactory receptors to respond or fire than weaker odours do. B) The axons of the olfactory receptor cells reach directly into the brain c) There are at least 1000 different types of olfactory receptors for different odours D Olfactory neurons last a lifetime, and cannot be replaced once they are destroyedarrow_forward
- Choose the correct receptor type from column B for each description given in column A.Column A Column B(1) pain, itch, and temperature receptors (a) bulbous corpuscles (b) tendon organs (c) muscle spindles (d) free nerve ending (e) lamellar corpuscles (f) tactile corpuscles(2) contain intrafusal fibers andflower spray endings(3) discriminative touch receptors inshairless skin (fingertips)(4) contain nerve endings wrappedaround thick collagen bundlesin a tendon(5) rapidly adapting deep-pressuremechanoreceptors(6) slowly adapting…arrow_forwardEnvironmental input to different sensory systems affects different neuroanatomical pathways. However, there is a basic, common pathway plan that most sensory systems share. Choose the response option that best describes that plan. receptors --> hindbrain --> midbrain --> cortical association area receptors --> medulla --> hypothalamus --> frontal cortex receptors -> spinal nerves --> midbrain --> temporal cortex receptors >brainstem --> thalamus --> primary cortical areaarrow_forwardIn the process of sensory coding Recruitment of additional neurons occurs with a weak stimulus in order to make the stimulus stronger. The larger the receptive field of a sensory receptor, the greater the expected acuity and the more accurate the two-point discrimination. Lateral inhibition of neighboring receptors resulting in a relative reduction of action potentials in the neighboring second order neurons would be expected to increase acuity. A receptor potential that remains suprathreshold into the absolute refractory period will result in additional action potentials.arrow_forward
- What are the classifications of sensory receptors according tomodality of stimulus? Give an anatomic example of eacharrow_forwardThe sensory systems are complex and have the amazing ability to respond to different types of environmental stimuli. What is one aspect of the sensory systems we have looked at (gustatory, olfactory, or visual) that you found particularly interesting and would like to know more about?arrow_forwardA reduction in sensitivity in the presence of constant stimulus is called: (a) transduction. (b) sensory coding. (c) line labeling. (d) adaptation.arrow_forward
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