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Ch. 44 - Animal Sensory Systems
All textbooksFreeman 8th EditionCh. 44 - Animal Sensory SystemsProblem 4
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Chapter 43, Problem 4

What type of sensory system do migrating birds use to detect direction?

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Hello everyone and welcome to today's video. So when we enter a dark room after a prolonged exposure to sunlight, our pupils dilate in order for a red net to gain access to more light. The cones in her eyes increase in sensitivity as a reaction to darkness. This process in our sensory system is called and we're giving certain processes that could describe what the question is talking about. Well, I want you to think about this in this way. Why is the pupils in her eyes dilating? Why is the cones in our eyes increasing their sensitivity while they're doing this in order for us to see better in darkness. So we changed from an area of increased sunlight to an area that is completely dark. And we are making these changes in order to see better or to adapt to these darkness or to these stimulus because of this this is going to be called sensory adaptation because we are promoting these changes in order for body to adapt to this new environment. Because of this, the correct answer choice is going to be answer choice. E that is the end of the video and I really hope this helped you
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Textbook Question

In the human ear, how do different hair cells respond to different frequencies of sound? a. Waves of pressure move through the fluid in the cochlea. b. Hair cells are 'sandwiched' between membranes. c. Receptor proteins in the stereocilia of each hair cell are different; each protein responds to a certain range of frequencies. d. Because the basilar membrane varies in stiffness, it vibrates in certain places in response to certain frequencies.

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Textbook Question

Evaluate the following statements according to information presented in this chapter. Select True or False for each statement. T/F Most human eyes have one type of rod and three types of cones. T/F Rods are more sensitive to dim light than cones are. T/F Nocturnal animals have fewer rods than diurnal animals T/F Both rods and cones use retinal and opsins to detect light.

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Which of these statements about taste is true? a. Sweetness is a measure of the concentration of hydrogen ions in food. b. Sodium ions from foods can directly depolarize certain taste cells. c. All bitter-tasting compounds have a similar chemical structure. d. Sourness is detected when hydrogen ions bind to membrane receptors.

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Textbook Question

Considering that sounds and odors both trigger changes in the patterns of action potentials in sensory neurons, how does the brain perceive which sense is which when the action potentials reach the brain? a. The action potentials stimulated by sounds are different in size and shape from those stimulated by odors. b. The axons from different sensory neurons go to different areas of the brain. c. Mechanoreception is not consciously perceived by the brain, whereas chemoreception is. d. Chemoreception is not consciously perceived by the brain, whereas mechanoreception is.

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Give three examples of how the sensory abilities of an animal correlate with its habitat or method of finding food and mates.

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Compare and contrast the lateral line system of fishes with electroreception in sharks.

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