Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 43, Problem 5TYU
Summary Introduction
Introduction: The human eye is a visual organ, having the ability to receive and process visual information. The eye detects light and converts it into electro-chemical impulses which are transmitted to the brain through optic nerves that result in the formation of an image on the retina which is a part of an eye. The human eye consists of iris which regulates the size of pupil, lens, cornea, ciliary muscles, and retina, where the image formation takes place.
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Chapter 43 Solutions
Biology (MindTap Course List)
Ch. 43.1 - How Sensory Systems Work LEARNING OBJECTIVES 1...Ch. 43.1 - Prob. 2LOCh. 43.1 - Prob. 1CCh. 43.1 - PREDICT Imagine that you are hiking along a bay...Ch. 43.1 - Prob. 3CCh. 43.1 - Identify five kinds of sensory receptors based on...Ch. 43.2 - Prob. 3LOCh. 43.2 - What are the functions of thermoreceptors in...Ch. 43.3 - Prob. 4LOCh. 43.3 - Prob. 1C
Ch. 43.3 - Prob. 2CCh. 43.4 - Describe the functions of nociceptors and identify...Ch. 43.4 - Prob. 1CCh. 43.4 - Prob. 2CCh. 43.5 - Prob. 6LOCh. 43.5 - Compare the structure and function of the saccule...Ch. 43.5 - Prob. 8LOCh. 43.5 - Prob. 1CCh. 43.5 - Prob. 2CCh. 43.5 - List the sequence of events involved in hearing.Ch. 43.6 - Prob. 9LOCh. 43.6 - Prob. 1CCh. 43.7 - Prob. 10LOCh. 43.7 - Prob. 11LOCh. 43.7 - Prob. 12LOCh. 43.7 - Prob. 1CCh. 43.7 - What happens when light strikes rhodopsin?...Ch. 43.7 - What is the sequence of neural signaling in the...Ch. 43.7 - What is meant by the statement Vision happens...Ch. 43 - Test your Understanding Know and Comprehend 1. A...Ch. 43 - Prob. 2TYUCh. 43 - Prob. 3TYUCh. 43 - Prob. 4TYUCh. 43 - Prob. 5TYUCh. 43 - Prob. 6TYUCh. 43 - Prob. 7TYUCh. 43 - Prob. 8TYUCh. 43 - Prob. 9TYUCh. 43 - Prob. 10TYUCh. 43 - Prob. 11TYUCh. 43 - SCIENCE, TECHNOLOGY, AND SOCIETY Cochlear implants...
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- Given that frogs are nearsighted in air, which statement is most likely to be true about their vision in water? (a) They are even more nearsighted; because water has a higher index of refraction than air, a frog’s ability to focus light increases in water. (b) They are less nearsighted, because the cornea is less effective at refracting light in water than in air. (c) Their vision is no different, because only structures that are internal to the eye can affect the eye’s ability to focus. (d) The images projected on the retina are no longer inverted, because the eye in water functions as a diverging lens rather than a converging lens.arrow_forwardThe change in focal length of an eye lens is caused by the action of the:(a) Pupil(b) Retina(c) Cilliary muscles(d) Irisarrow_forwardVision is a complex process. The human eye has many structures that contribute to vision. Which of the following statements describing the structures involved in the process of vision is NOT correct? a. Ciliary muscles change the shape of the lens to focus both near and distant objects. b. The cornea and lens bend light to focus the image on the retina. c. The iris relaxes and contracts to protect the retina from excess light. d. Lenses move forward or backward to control the amount of light striking the retina.arrow_forward
- When a person blinks, the part of the brain that interprets visual stimulation is suppressed. The spontaneous act of blinking is controlled by the area of the brain that controls involuntary movements such as breathing and blood pressure. To determine whether the lack of light or the act of blinking causes the suppression, scientists had subjects close their eyes and then placed a bright flashing light in their mouth to stimulate the photoreceptors in the eyes through the palate. Visual stimulation was still suppressed. So the photoreceptors in the retina were not stimulated even though they were exposed to light. This study demonstrated that when a person blinks, it is the act of blinking and not the absence of light that causes the suppression of visual stimulation. In the diagram above, identify the part of the brain that is suppressed during blinking and the part of the brain that controls involuntary, spontaneous blinking. Select one: a. 3 and 8 b. 2 and 9 c. 5 and 6 d. 1…arrow_forward29. Which of the following is a correct statement about the cells of the human retina? A) Cone cells can detect color, but rod cells cannot. B) Cone cells are more sensitive to light than rod cells are. C) Cone cells, bit not rod cells, have a visual pigment. D) Rod cells are most highly concentrated in the center of the retina. 30. What structural feature(s) contribute(s) most to the diverse adaptations for animal movement? A) sensory system B) skeletal system C) muscular system D) nervous system E) B and C onlyarrow_forwardYou are watching the stars at night, and you never seem to be looking at the right spot to catch the brightest meteors. Which of the following might explain this? a)Your fovea contains mostly cones; thus you see dim light especially well when looking right at it. b)Your peripheral retina contains more rods, which are more sensitive to dim light than cones; thus objects in your peripheral vision appear brighter in dim light situations. c)Detection of light depends mostly on its color rather than intensity; thus cones play a larger role in detection of light in dim light situations. d) all of the above. ( well explain the correct answer and type answer).arrow_forward
- 1.) The rods absorb light and initiate a neural impulse to the brain when. A.) rhodopsin splits into retinal and opsin thereby stopping the release of an inhibitory neurotransmitter B.) retinal and opsin combine into rhodopsin thereby releasing a stimulatory neurotransmitter C.) iodopsin splits into photopsin and retinal thereby stopping the release of an inhibitory neurotransmitter D.) retinal and photopsin combine into iodopsin thereby releasing a stimulatory neurotransmitter 2.) After a neuronal membrane has become depolarized its resting potential is reestablished when A.) Na^ + diffuse into the neural fibre B.) Na^ + diffuse out the neural fibre. C.) K^ + diffuse into the neural fibre D.) K^ + diffuse out the neural fibre 3.) The middle car chamber is an airfilled in the head"which is adapted to allow free movement of the tympanum as it vibrates. Unless the pressure in the chamber…arrow_forwardIn the process of hearing, the basilar membrane vibrates. Which event occurs next? (a) tympanic membrane vibrates (b) bones in middle ear amplify and conduct vibrations (c) cochlear nerve transmits impulses to organ of Corti(d) hair cells in organ of Corti are stimulated (e) vibrations are conducted to chemoreceptorsarrow_forwardWhich of the following statements about photoreceptors is true? A) There are more rod cells in the fovea of the eye, although overall there are more cones in the human eye. B) All of these options C) Photoreceptors are located near the front of the eye, in the cornea. D) There are two types of photoreceptors, rods and cones, that contain different photopigments.arrow_forward
- Which of the following statements about the contributions of rods and cones to vision is TRUE? A. The three types of cones (long, medium, short) are represented at roughly equal numbers B. Rods respond to light at ultra-violet wavelengths (>600nm) C. The relative density of cones is roughly even throughout the retina D. The greater sensitivity of rods in low light is explained by their larger number E. Several rods converge on a single bipolar cellarrow_forwardWhich one of the following statements about photoreception is true? a. Light detection is initiated by the absorbance of light (a photon) by a photopigment molecule. b. Light detection is synonomous with vision. c. Light detection is always initiated in a rod photoreceptor located in the retina. d. Only light in the visible range (between 400 and 700 nm wavelength) can be detected by animals. e. None of the above answer choices (neither A, nor B, nor C, nor D) is true.arrow_forwardReview how photoreceptors within the eye detect light and transmit that information to the brain, by identifying each lettered structure in the figure below and answering the questions that follow: A: B: C: D: E: F: G: Which structure responds to color?: Which structure responds to dim light and movement?: Which two structures release neurotransmitters in response to light?: Which structure binds to those neurotransmitters, relays an action potential, and releases a second set of neurotransmitters?: Which structure binds to this second set of neurotransmitters and relays an action potential through the optic nerve to the brain?: Which direction does light travel through the retina? Toward the choroid or away?: Which direction do neural signals travel through the retina? Toward the choroid or away?:arrow_forward
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