Pearson eText Human Anatomy -- Instant Access (Pearson+)
9th Edition
ISBN: 9780135212936
Author: Frederic Martini, Robert Tallitsch
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
Pearson eText Human Anatomy -- Instant Access (Pearson+)
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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- Fill in the blank: 1) In the triceps reflex demonstration, the triceps muscle was the effector. One or more____receptors were stimulated in the tendon? 2) When suddenly illuminated with a penlight, the pupil of the eye normally____(dilates/constricts)arrow_forwardParalysis of a medial rectus muscle would affect (a) accommodation,(b) refraction, (c) depth perception, (d) pupil constriction.arrow_forwardSelect the best answer or answers from the choices given: Damage to the medial recti muscles would probably affect (a) accommodation, (b) refraction, (c) convergence, (d) pupil constriction.arrow_forward
- Fill in the gap with appropriate phrase or word. 1. ….................. The lateral lemniscus pathway is associated with this specific and major function. 2. ................. The visual reflex centre is found at this location.arrow_forwardSelect the best answer or answers from the choices given: Which of the following is important in maintaining the balance of the body? (a) visual cues, (b) semicircular canals, (c) the saccule, (d) proprioceptors, (e) all of these.arrow_forward(a) When a person experiences a heart attack, why is there pain down the left arm? (b) Why would pain persist even after the stimulus is removed?arrow_forward
- Select the best answer or answers from the choices given: Proprioceptors include all of the following except (a) muscle spindles, (b) tendon organs, (c) tactile discs, (d) joint kinesthetic receptors.arrow_forwardWhen light strikes a photoreceptor, it reduces the amount of glutamate that it releases. This releases ___ cells from inhibition, allowing them to release more neurotransmitters and excite ___ cells. This produces action potentials that travel down the optic nerve. A) horizontal; amacrine B) amacrine; horizontal C) ganglion; bipolar D) bipolar; ganglionarrow_forwardDescribe the function and the innervation of both the sphincter and dilator muscles of the pupil (in the iris of the eye).arrow_forward
- Select the best answer or answers from the choices given: Activation of the sympathetic nervous system causes (a) contraction of the sphincter pupillae muscles, (b) contraction of the dilator pupillae muscles, (c) contraction of the ciliary muscles, (d) a decrease in ciliary zonule tension.arrow_forwardDo you think the patellar reflex would be inhibited or enhanced by actively contracting the quadriceps muscle group? With an understanding of how muscle spindle fibers work, explain how active contraction of a muscle might affect the myotactic reflex. [hint: try to elicit a knee jerk reflex when someone is doing a leg lift]arrow_forwardYour 60-year-old patient, Mr. Guster, has Bell’s palsy, which uses dysfunction of those portions of the facial nerve thatcontrol muscles of facial expression. He is surprised when you tell him to tape the eyelids of his right eye closed at night to prevent dryness. Why might Bell’s palsy cause dryness of the eye on the affected side?arrow_forward
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