Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 39, Problem 12TYK
Summary Introduction
To review:
In case of some vertebrates, nasal epithelium synapse directly with the brain neurons that activate behavioral responses to odors. Reviewing the reason for this type of development in animals favored by natural selection.
Introduction:
Animal brains are filled with neurons in which analysis of stimulus, that comes from all over the body takes place. Sensory neurons are associated with sensory organs such as skin, or other sensory organs. They carry impulse to the CNS (central nervous system), that is, the brain and the spinal cord. Motor neuron carries impulse or messages from the brain to the muscles hence, known as a motor neuron. Interneurons are present between these two neurons and they relay and carry electric impulses in between the central nervous system.
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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.
The brain’s somatosensory cortex does not consist of neurons that receive information equally from all parts of the animal’s body. Describe an example of this by identifying a relevant animal and the body parts that are disproportionately high in neuronal input to the somatosensory cortex.
Please consider explaining all the blanks in a step by step detailed manner.
Chapter 39 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 39.1 - Prob. 1SBCh. 39.1 - Prob. 2SBCh. 39.1 - Prob. 3SBCh. 39.2 - Prob. 1SBCh. 39.2 - Prob. 2SBCh. 39.3 - Prob. 1SBCh. 39.3 - Prob. 2SBCh. 39.4 - Prob. 1SBCh. 39 - Prob. 1TYKCh. 39 - Prob. 2TYK
Ch. 39 - An example of a synapse could be the site where:...Ch. 39 - Prob. 4TYKCh. 39 - The major role of the Na+/K+ pump is to: a. cause...Ch. 39 - In the propagation of a nerve impulse: a. the...Ch. 39 - Which of the following does not contribute to...Ch. 39 - Which of the following statements best describes...Ch. 39 - Prob. 9TYKCh. 39 - Prob. 10TYKCh. 39 - Prob. 11TYKCh. 39 - Prob. 12TYKCh. 39 - Prob. 13TYKCh. 39 - Prob. 14TYKCh. 39 - Prob. 15TYKCh. 39 - Prob. 16TYKCh. 39 - You learned in this chapter that Na+/K+ active...Ch. 39 - Prob. 2ITDCh. 39 - Prob. 3ITD
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