ANATOMY & PHYSIOLOGY COMM COLL PHILADELPHIA
16th Edition
ISBN: 9781323360989
Author: MARTINI & NATH
Publisher: PEARSON
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Chapter 18, Problem 9RFT
Summary Introduction
Introduction:
Autonomic nervous system (ANS) is a part of nervous system, which controls body functions that are not directed consciously, like breathing, digestive processes, and heartbeat. It is further divided into parasympathetic and sympathetic nervous system. Sympathetic nervous system regulates flight-or-fight responses, whereas parasympathetic nervous system regulates normal body functions, such as heart rate and constriction of eye pupils.
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Chapter 18 Solutions
ANATOMY & PHYSIOLOGY COMM COLL PHILADELPHIA
Ch. 18 - Using the diagram, fill in the blanks below with...Ch. 18 - 2. A receptor that is especially common in the...Ch. 18 - Fine touch and pressure receptors provide detailed...Ch. 18 - Receptors in the saccule and utricle provide...Ch. 18 - 5. Deep to the subcutaneous layer, the eyelids are...Ch. 18 - Prob. 6RFTCh. 18 - Prob. 7RFTCh. 18 - Mechanoreceptors that detect pressure changes in...Ch. 18 - Prob. 9RFTCh. 18 - Auditory information about the frequency and...
Ch. 18 - Fill in the blanks below with the proper...Ch. 18 - Prob. 1RCCh. 18 - Prob. 2RCCh. 18 - 3. A person salivates when anticipating eating a...Ch. 18 - Prob. 4RCCh. 18 - 5. What could stimulate the release of an...Ch. 18 - Prob. 6RCCh. 18 - Prob. 7RCCh. 18 - Prob. 8RCCh. 18 - Prob. 9RCCh. 18 - Prob. 10RCCh. 18 - 1. Beth has surgery to remove some polyps...Ch. 18 - 2. Jared is 10 months old, and his pediatrician...Ch. 18 - Prob. 3CT
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- Why do some fibers project from the optic chiasm to the midbrain?arrow_forwardParalysis of a medial rectus muscle would affect (a) accommodation,(b) refraction, (c) depth perception, (d) pupil constriction.arrow_forwardDiagram a hypothetical reflex arc to explain the pupillary reflex observed when a penlight is shined into the left eye.arrow_forward
- What muscles contract in response to the activation of right PPRF? In what direction do the eyes move in response to the activation of right PPRF? Explain the neuronal circuitry by which the right PPRF controls horizontal gaze of eyes to the right.arrow_forwardWhat is the visual outcome if the specific extrinsic eye muscle involved in convergence reflex did not function?arrow_forwardAs a person ages, their ability to focus on near objects(accommodation) changes. If a person is already myopic(near-sighted), why would corrective lenses not benecessary to read a book or computer screen?arrow_forward
- How would the otolith organs of an astronaut respond to zero gravity? Would the astronaut still have a subjective impression of motion? Would the semicircular canals detect angular acceleration equally well at zero gravity?arrow_forwardConcerning the puppilary reflex, what happens to the diameter of the pupil? Do both pupils change simultaneously?arrow_forwardWhy would reading for a long time lead to “eye fatigue,” whereaslooking at something distant is restful?arrow_forward
- Describe the steps in the pupil reflex.arrow_forwardWatch this video (http://openstaxcollege.org/l/reflexarc) to learn more about the reflex arc of the cornealreflex. When the right cornea senses a tactile stimulus, whathappens to the left eye? Explain your answer.arrow_forwardWhat is meant by Extensors?arrow_forward
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