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_forwardWhich of the following statements about the eye is/are TRUE? Group of answer choices Parasympathetic (sympathetic) innervation of the sphincter pupillae stimulates pupil dilation. Photoreceptors in the retina are of two types: rods and cones. Eye color is determined by that of the iris. A. Light striking the fovea centralis goes unnoticed and is commonly called the "blind spot". B. Light entering the eye passes through the cornea, anterior chamber, pupil, lens, and vitreous body, from outer to inner.(posterior only) C. Movement of the extrinsic muscles of the eye is controlled by the autonomic (optic nerve) nervous system. D. Because lacrimal fluid ultimately enters into the nasal cavity, people often sniffle when they cry. F. The adjustability of the lens allows the eye to focus on nearby objects.arrow_forwardPut the following events in order beginning with the event that happens first in order for one to have the sense of sight: ___Light passes through the pupil. ___Rods and/or cones initiate nerve impulses. ___Nerve impulses are carried to the brain by the optic nerve. ___Light passes through the cornea. ___Light passes through the anterior chamber of the anterior cavity. ___Light passes through the posterior chamber of the anterior cavity. ___Impulses reach the occipital lobe of the cerebrum. ___Light passes through the vitreous humor. ___Light passes through the lens. ___Light hits light sensitive pigments in photoreceptorsarrow_forward
- A scientist has dissected out a small section of the retina and is able to directly record the action potential firing rate in a single ganglion cell. Assume there is a on-center off-surround bipolar cell connected to an on-center off-surround ganglion cell. When applying ‘Stimulus 1’ the scientist records a moderate action potential rate. When applying ‘Stimulus 2’ the rate of action potentials increases substantially. In the context of this experiment no illumination is an option as a 'Stimulus'. ‘Stimulus 2’ would result in what response in the bipolar cell (the one connected to the ganglion cell the scientist is measuring)? A. A large depolarization of the bipolar cell membrane B. The bipolar cell membrane would remain at the resting membrane potential C. A large hyperpolarization of the bipolar cell membrane D. A small hyperpolarization of the bipolar cell membrane E. A small depolarization of the bipolar cell membranearrow_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_forwardIn 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_forward
- Albinism is a condition in which melanin pigment is not made. How do you think vision is affected by albinism? When Mrs. Martinez visits her opthalmologist, she complains of pain in her right eye. the intraocular pressure is found to be abnormally elevated. What is the name of Mrs. Martinez's probable condition? What causes it? What might be the outcome if the problem is not corrected?arrow_forwardIf I shine a light in only one of your eyes, making sure not to get any light in the other eye, both eyes would constrict their pupils. Even if an eye does not receive stimulus, it can have a contralateral response. Explain why.arrow_forwardChoose the correct answer: When viewing far objects the under normal conditions, the i. ciliary body is contracted, suspensory ligament is tense and the lens is flat ii. ciliary body is relaxed, suspensory ligament is tense and the lens is flat iii. ciliary body is relaxed, suspensory ligament is relaxed and the lens is thicker iv. ciliary body is contracted, suspensory ligament is relaxed and the lens is thickerarrow_forward
- Classify statements about the eye as true or false. True The iris regulates the amount of light that enters the eye. The cornea is a transparent covering over the eye. The fovea is the part of the eye where you have the sharpest, most distinct vision. The image formed in the eye is upright. False Adjustments in focus are collectively called accommodation and are made by the ciliary muscle. The fovea is the opening through which light enters the eye. The image seen by the eye should be focused on the pupil Information leaves the eye through the ciliary muscle.arrow_forwardThe eye contains both skeletal muscle and smooth muscle. Describe where each is located and indicate their functions.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 surroundings are 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 Gravitational equilibrium O b. Structure Process Organ of Corti Rotational equilibrium O c. Structure Process Organ of Corti Gravitational equilibrium d. Structure Process Semicircular canals Rotational equilibriumarrow_forward
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