Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 14.3, Problem 7QC
Summarize the effects of the parasympathetic nervous system on the smooth muscle cells of the following structures.
a. Pupil
b. Lens
c. Blood vessels serving the penis
d. Digestive tract
e. Urinary and digestive sphincters
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D) Relaxation above and below the point of distention
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Chapter 14 Solutions
Human Anatomy & Physiology (2nd Edition)
Ch. 14.1 - What are the basic functions of the ANS?Ch. 14.1 - 2. What are autonomic ganglia?
Ch. 14.1 - How do somatic motor neurons and autonomic neurons...Ch. 14.1 - 4. What are preganglionic and postganglionic...Ch. 14.1 - What are the two divisions of the ANS?Ch. 14.1 - How are the two divisions of the ANS alike, and...Ch. 14.2 - 1. Where are the cell bodies of sympathetic...Ch. 14.2 - Where are the cell bodies of sympathetic...Ch. 14.2 - Which neurotransmitter(s) is (are) released by...Ch. 14.2 - Prob. 4QC
Ch. 14.2 - Describe the effects of the sympathetic nervous...Ch. 14.2 - Prob. 6QCCh. 14.3 - What is the basic function of the parasympathetic...Ch. 14.3 - Where are the preganglionic parasympathetic cell...Ch. 14.3 - How does the arrangement of neurons in the...Ch. 14.3 - 4. Which neurotransmitter is released by all...Ch. 14.3 - Prob. 5QCCh. 14.3 - Prob. 6QCCh. 14.3 - Summarize the effects of the parasympathetic...Ch. 14.4 - Prob. 1QCCh. 14.4 - Prob. 2QCCh. 14.4 - 3. What is autonomic tone?
Ch. 14.4 - How does the CNS mediate control over the ANS?Ch. 14 - Which of the following best describes the basic...Ch. 14 - 2. Fill in the blanks: The sympathetic nervous...Ch. 14 - 3. Sympathetic preganglionic neurons synapse:
a....Ch. 14 - Differentiate between adrenergic and cholinergic...Ch. 14 - Prob. 5CYRCh. 14 - Explain what happens when sympathetic neurons...Ch. 14 - Prob. 7CYRCh. 14 - Mark each of the following as an effect of the...Ch. 14 - Mark the following statements as true or false. If...Ch. 14 - 10. Fill in the blanks: _______receptors are...Ch. 14 - Parasympathetic ganglia are typically: a. located...Ch. 14 - Central nervous system control over the ANS is...Ch. 14 - 1. Using 20 or fewer words, define each of the...Ch. 14 - You are running a race to the top of a mountain....Ch. 14 - 3. Describe all the changes initiated by the...Ch. 14 - 1. Which cranial nerves would be affected by a...Ch. 14 - 2. A patient, Dr. Young, has both asthma and high...Ch. 14 - Mr. Chevalier has been diagnosed with Horner...Ch. 14 - Many chemical warfare agents, such as the...
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- Graph A in this diagram represents A) summation and tetanus of a smooth muscle fibre. C) a simple skeletal muscle twitch c) summation and tetanus of a skeletal muscle fibre. D)simple smooth muscle twitch.arrow_forwardWhich of the following would be recruited in a muscle stimulation when contractile strength increases? A) Many small motor units with the ability to stimulate other motor units B) Motor units with the longest muscle fibers C) Motor units with larger, less excitable neurons D) Large motor units with small, highly excitable endurancearrow_forwarda. Describe the relationship between stimulus voltage and the force of contraction b. What was the smallest voltage required to produce a contraction (the threshold voltage)? What proportion of the fibers in the muscle do you think were contracting to produce this small response? c. What do you conclude happened to the number of fibers contracting as the voltage was raised from threshold to that required to produce a maximal contraction?arrow_forward
- Activation of PKC in the direct perforant pathway leads to which effect? a. insertion of new AMPA receptors b. enhanced neurotransmitter release c. increased L-type calcium channel currents d. decreased potassium channel currentarrow_forwardWhat is the physiological mechanism that produces a quick and efficient skeletal muscle response to an external stimulus? A. voluntary motor commands from the brain B. temporal and spatial summation C. sensory nerve input to the brain D. spinal reflex arc E. endocrine secretory responsearrow_forwardWhy is it important to remove acetylcholine from its binding to acetylcholine receptors once the neural stimulus ends? What can be the possible consequence of the non-removal of acetylcholine to the skeletal muscle fiber?arrow_forward
- a) Describe how the isolated muscle behaved as it was stretched progressively. b) What effect does stretching the muscle have on contraction strength? Is this effect linear? c) What stretch resulted in the highest contraction force? What happens to the muscle at the highest stretch levels?arrow_forwarddraw a figure showing the differant between nictonic and muscarnic receptors in skeletal musclearrow_forwardWhich of the following statements about skeletal muscle is CORRECT? Select one: a. An increase in Na+ concentration in the cytosol starts muscle filament sliding. b. The muscle is non-striated and involuntary. c. The muscle is involved in shivering thermogenesis. d. The muscle contracts in response to parasympathetic stimulation. e. The muscle contracts in response to hormones.arrow_forward
- The names of the muscles can indicate all of the following, EXCEPT ___________. a.myofibril numbers of the muscle b.the direction of the muscle relative to the long axis of the body c.action of the muscle d.the region of the body where the muscle is located 2. An exocrine gland that loses small parts of its cell bodies during secretion, as is the case for the mammary gland, is further classified as a ____________ gland. a.Endocrine b.Merocrine c.Holocrine d.Apocrinearrow_forwardMatch the following features of the muscle tissue. 1 Muscle tissue function. 2 It is a voluntary muscle. 3 It is striated and located in the heart. 4 It is striated and attached to bones. A. Contraction and movement. B. Cardiac Muscle. C. Skeletal Muscle D. Skeletal musclearrow_forwardPelvic splanchnic neurons function to Choose from the following: (A) increase constriction of the muscles found at the site of the pink/purple dots (B) function to dilate the muscles found at the site of the pink/purple dots (C) function to contract muscles indicated by the black arrows (D) function to dilate muscles indicated by the black arowsarrow_forward
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