Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Textbook Question
Chapter 10, Problem 40RQ
The iris of the eye has two sets of antagonistic muscles, one for dilation and one for constriction. One set of muscles is radial (radiating from the center of the pupil), and the other set is circular. Draw an iris and pupil, and arrange the muscles so that contraction of one set causes pupillary constriction and contraction of the other set causes dilation.
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Chapter 10 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 10.1 - What advantage do myelinated axons provide?Ch. 10.1 - What accessory role does the outer ear (the pinna)...Ch. 10.1 - Prob. 3CCCh. 10.1 - In Figure 10.5, what kind(s) of ion channel might...Ch. 10.1 - How do sensory receptors communicate the intensity...Ch. 10.1 - Prob. 6CCCh. 10.2 - Prob. 7CCCh. 10.2 - Prob. 8CCCh. 10.2 - Your sense of smell uses phasic receptors. What...Ch. 10.3 - Create a map or diagram of the olfactory pathway...
Ch. 10.3 - Create a map or diagram that starts with a...Ch. 10.3 - Prob. 12CCCh. 10.3 - Are olfactory neurons pseudounipolar, bipolar, or...Ch. 10.3 - Prob. 14CCCh. 10.3 - Prob. 15CCCh. 10.4 - Prob. 16CCCh. 10.4 - Prob. 17CCCh. 10.5 - Prob. 18CCCh. 10.5 - Would a cochlear implant help a person who suffers...Ch. 10.5 - Prob. 20CCCh. 10.5 - Prob. 21CCCh. 10.5 - Prob. 22CCCh. 10.5 - Prob. 23CCCh. 10.6 - What functions do the aqueous humor serve?Ch. 10.6 - Prob. 25CCCh. 10.6 - Prob. 26CCCh. 10.6 - Prob. 27CCCh. 10.6 - Prob. 28CCCh. 10.6 - Prob. 29CCCh. 10.6 - Some vertebrate animals that see well in very low...Ch. 10.6 - Prob. 31CCCh. 10.6 - Macular degeneration is the leading cause of...Ch. 10.6 - Prob. 33CCCh. 10.6 - Draw a map or diagram to explain...Ch. 10 - What is the role of the afferent division of the...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - When a sensory receptor membrane depolarizes (or...Ch. 10 - Prob. 9RQCh. 10 - The organization of sensory regions in the _____...Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Which structure of the inner ear codes sound for...Ch. 10 - Prob. 17RQCh. 10 - Prob. 18RQCh. 10 - Prob. 19RQCh. 10 - Prob. 20RQCh. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 23RQCh. 10 - Prob. 24RQCh. 10 - Prob. 25RQCh. 10 - Trace the neural pathways involved in olfaction....Ch. 10 - Prob. 27RQCh. 10 - Prob. 28RQCh. 10 - Prob. 29RQCh. 10 - Map the following terms related to vision. Add...Ch. 10 - Prob. 31RQCh. 10 - Prob. 32RQCh. 10 - Prob. 33RQCh. 10 - Prob. 34RQCh. 10 - Prob. 35RQCh. 10 - Consuming alcohol depresses the nervous system and...Ch. 10 - Prob. 37RQCh. 10 - A clinician shines a light into a patients left...Ch. 10 - An optometrist wishes to examine a patients...Ch. 10 - The iris of the eye has two sets of antagonistic...Ch. 10 - As people age, their ability to see at night...Ch. 10 - The relationship between focal length (F) of a...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Awareness of a stimulus is called a ________.arrow_forwardThe inner layer of the eye includes the _____________. a. lens and choroid b. sclera and cornea c. retina d. start of optic nervearrow_forwardThe outer layer of the eye includes the____________. a. lens and choroid b. sclera and cornea c. retina d. both a and carrow_forward
- Figure 36.18 Which of the following statements about the human eye is false? Rods detect color, while cones detect only shades of gray. When light enters the retina, it passes the ganglion cells and bipolar cells before reaching photoreceptors at the rear of the eye. The iris adjusts the amount of light coming into the eye. The cornea is a protective layer on the front of the eye.arrow_forwardAs you read the question, light enters your eye, is focused, detected, and then changed into electrical impulses that are sent to your brain. Starting with the cornea and ending with the optic nerve, list all the structures of the eye that light passes through (in order) and describe their functions.arrow_forwardThe rods are responsible for _______________, whereas the cones are responsible for___________________. peripheral and dim light vision; high-acuity color vision high-acuity color vision; peripheral and dim light vision peripheral and color vision; high-acuity and dim light vision high-acuity and dim light vision; peripheral and color visionarrow_forward
- What aspect of the neural circuity in the pupillary light reflex is responsible for the consensual response? a. Preganglionic parasympathetic neurons project their axons to neurons in the ciliary ganglion. b.Pretectum neurons send axons to the Edinger-Westfall nuclei on both sides of the brain. c. Neurons in the ciliary ganglion innervate the constrictor muscle in the iris, which decreases the diameter of the pupil when activated. d. The muscles in the iris encircle the pupillary opening so that light enters in the center of the eye. e. The ciliary muscles contract concentrically to release the tension in the zonule fibers.arrow_forwardWhich of the following will regulate the amount of light entering the eye?a. corneab. lensc. irisd. retinaarrow_forwardWhen 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_forward
- In a short essay (100–150 words), describe three ways in which the structure of the lens of the human eye is well adapted to its function in vision.arrow_forwardThe inner ear is responsible for both hearing and balance. One of the diseases affecting the inner ear is Meniere's disease. Affected individuals often experience vertigo, among other symptoms. Vertigo is a sensation that the surrounding is spinning or swaying in the absence of any body movement. Which of the following rows correctly identifies the affected structure and process in individuals experiencing vertigo? Select one: a. Structure Process Semicircular canals Rotational equilibrium b. Structure Process Semicircular canals Gravitational equilibrium c. Structure Process Organ of Corti Gravitational equilibrium d. Structure Process Organ of Corti Rotational equilibriumarrow_forwardWhen transitioning from a pitch black room, to a sunny room where there is a lot of light, what happens to the cells in the retina? 1. Ganglion cells will release more glutamate 2. Rod cells will release less glutamate 3. Ganglion cells will release less glutamate 4. Rod cells will release more glutamatearrow_forward
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