Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Chapter 27, Problem 3WIO
Summary Introduction
To explain:
The reasons for slow sensory adaptation to pain stimuli which is favored by evolution.
Concept introduction:
Sensory adaptation is the phenomenon of being adaptable to a sensation with prolonged exposure of stimulus and the stimulus become less noticeable to an individual. This is because of the sensory receptor produce fewer action potentials under the constant stimulation of a stimulus.
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Explain how receptors trigger sensory impulses.
In 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.
Environmental 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 area
Chapter 27 Solutions
Biology: Concepts and Investigations
Ch. 27.1 - Prob. 1MCCh. 27.1 - Prob. 2MCCh. 27.1 - Prob. 3MCCh. 27.1 - Prob. 4MCCh. 27.1 - Prob. 5MCCh. 27.2 - Prob. 1MCCh. 27.2 - Prob. 2MCCh. 27.3 - Prob. 1MCCh. 27.3 - Prob. 2MCCh. 27.4 - Prob. 1MC
Ch. 27.4 - Prob. 2MCCh. 27.4 - Prob. 3MCCh. 27.5 - What are the parts of the ear, and how do they...Ch. 27.5 - How does the vestibular apparatus provide the...Ch. 27.6 - Prob. 1MCCh. 27.6 - Prob. 2MCCh. 27 - As you snuggle into bed, you feel the weight of...Ch. 27 - Prob. 2MCQCh. 27 - Prob. 3MCQCh. 27 - The structures that enable bees to see flowers are...Ch. 27 - What is the function of hair cells in the cochlea?...Ch. 27 - A male moth uses his antennae to detect the...Ch. 27 - Prob. 2WIOCh. 27 - Prob. 3WIOCh. 27 - Try as you might, you cannot tickle yourself....Ch. 27 - Prob. 5WIOCh. 27 - How does the nervous system differentiate among...Ch. 27 - Prob. 7WIOCh. 27 - Prob. 8WIOCh. 27 - Explain why some people hold their nose when...Ch. 27 - Suppose you put on glasses belonging to someone...Ch. 27 - Prob. 11WIOCh. 27 - Prob. 12WIOCh. 27 - In a rare condition called synesthesia,...Ch. 27 - Prob. 1PITCh. 27 - Prob. 2PIT
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- Describe sensory adaptation and then give one example of a case in which one might interpret this to be an advantage and one that could be considered a disadvantaged.arrow_forwardNot every sensory signal results in conscious awareness ofa stimulus. Explainarrow_forwardExplain how sensory receptors provide input regarding the modality, location, intensity, and duration of a stimulus.arrow_forward
- Explain how receptors trigger sensory information?arrow_forwardExplain why evolution has favored slow sensory adaptation to painstimuli.arrow_forwardSensory adaptation occurs when the brain filters out repetitious and/or insignificant information. Indicate the correct example of sensory adaptation.arrow_forward
- A light signal activates a photoreceptor, which, in turn, activates a bipolar cell. Horizontal cells in the retina inactivate the surrounding bipolar cells. Which of the following is the correct sensory system property that this example is describing? Frequency coding Population coding Stimulus type O Lateral inhibition Receptor adaptationarrow_forwardExplain the difference between slow adapting and fast adapting receptors for touch. Give an example of a situation where each type of receptor would be activated. Paragraph BIU A 0⁰ + v ...arrow_forwardDescribe how receptor adaptation works.arrow_forward
- Explain how sensory transduction takes place at a sensory receptor?arrow_forwardDescribe the flow of generation of receptor potential when sensory receptors detected stimuli.arrow_forwardSome somatic senses are fast-adapting and others are slow-adapting. Two different types of receptors are listed below. Explain the advantage using an example, for it to be slow or fast. Then explain, using an example, for why it would be harmful if it was the opposite type. Temperature receptor for cold temperatures, fast-adapting 2.Muscle-spindle proprioceptor, slow-adaptingarrow_forward
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