Human Anatomy & Physiology (2nd Edition)
2nd Edition
ISBN: 9780134553511
Author: Erin C. Amerman
Publisher: PEARSON
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Textbook Question
Chapter 14, Problem 4AYKB
Many chemical warfare agents, such as the poisonous gas sarin, block the enzyme acetylcholinesterase in the synaptic cleft. What effects will this poison have on muscle contraction? (Connects toChapter 10) What effects will it have on the autonomic nervous system? What symptoms would you expect to see from this poison?
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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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- Match each numbered item with the most closely related lettereditem.Challenge Yourself1. motor nervoussystem2. effector3. oligodendrocyte4. chromatophilicsubstance5. collaterals6. microglial cells7. multipolar neurons8. interneuron9. chemical synapse10. dendritea. skeletal muscle fiberb. neuron part that usuallyreceives incoming impulsesc. stain darkly with basic dyesd. transmits motor informatione. uses a neurotransmitterf. makes myelin sheaths in CNSg. neurons with multipledendritesh. side branches of axonsi. respond to CNS infectionj. sensory to motor neuroncommunicationarrow_forwardWhen you lift a heavy box, your muscles need to generate a stronger than average contraction. What will happen to the timing and frequency of nerve stimulation of your muscles, and why?arrow_forwardWe regularly make conscious decisions to make specific muscular movements. For example, when using the touch interface of your phone, you make a conscious effort to scroll up and down the screen using your finger. In contrast, there are many muscular movements that cannot be controlled voluntarily. For example, you cannot make your heart stop by thinking about it. Which of the following statements correctly identifies the parts of the nervous system that are involved in voluntary and involuntary actions, respectively? Select one: a. Motor neurons of the somatic nervous system and motor neurons of the autonomic nervous system b. Motor neurons of the autonomic nervous system and sensory neurons of the somatic nervous system c. Sensory neurons of the somatic nervous system and sensory neurons of the autonomic nervous system d. Sensory neurons of the peripheral nervous system and motor neurons of the autonomic nervous systemarrow_forward
- In muscles, acetylcholine is released by the _________________________and opens specific channels that allow the ion ______ to depolarize the membrane. motor neuron, sodium motor neuron, potassium muscle fibril, sodium muscle fibril, potassiumarrow_forwardLabel on the diagram: 1. Muscle spindle 2. Sensory neuron 3. Soma of sensory neuron 4. Dorsal root 5. Dorsal root ganglion 6. Dorsal horn 7. Ventral horn 8. Motor neuron to quad 9. Motor neuron to biceps 10. Excitatory synapse 11. Inhibitory synapse What is the name of this reflex? e20SPm idton, How many neurons are Tap your partner's patellar ligament to test their reflexes and try tapping the belly of the brachioradialis muscle to see what happens. involved?arrow_forwardPlease order the steps of voluntary movement. 1) Primary motor cortex sends information to alpha motor neurons 2) The prefrontal and parietal cortices decide to initiate movement. 3) Alpha motor neurons initiate muscle contractions. 4) The supplementary motor area (SMA) uses input from the thalamus and basal ganglia to plan a movement.arrow_forward
- What would happen to an insect if you treated an insect with a chemical that inhibits acetylcholinesterase? 1) K+ channels get stuck open and the neuron stays perminantly hyperpolarized 2) Acetylcholine would continue to activiate Ca++ channels until death by exhaustion 3) Acetylcholine would continue to activiate Na+ channels until death by exhaustionarrow_forwardThe venom of some cobras contains a mixture of substances that have a variety of physiological effects. One substance in the venom works by preventing acetylcholine from binding to muscle receptors. Which of the following describes the effect of the venom on the prey of the cobra? Question 5 options: Muscle contractions are prevented, causing paralysis. Muscle contractions occur, but refractory periods would be longer. Action potentials are continuously generated, causing tetanus. Weak muscle contractions occur but are limited by ATP production by glycolysis.arrow_forwardWhen motor nerve fibers in the leg are severed, the muscles they innervate become paralyzed; however, in time, control over the muscles often returns. Why/how is this possible?arrow_forward
- Several of the events that occur between the time a physician strikes apatient’s patellar tendon with a rubber hammer and the time the quadriceps femoris contracts (knee-jerk reflex) are listed below:(1) increased frequency of action potentials in sensory neurons(2) stretch of the muscle spindles(3) increased frequency of action potentials in the alpha motor neurons(4) stretch of the quadriceps femoris(5) contraction of the quadriceps femorisWhich of the following most closely describes the sequence ofevents as they normally occur?a. 4,1,2,3,5 c. 1,4,3,2,5 e. 4,2,3,1,5b. 4,1,3,2,5 d. 4,2,1,3,5arrow_forwardRachel is out playing in the dirt and cuts herself, unbeknownest to her a bacteria enters her system and moves retrogradely through the peripheral nerves to enter the central nervous system. Once there its toxins begin to interfere with the release of the neurotransmitter Glycine from the upper motor neurons of the direct motor pathway. this would lead to Group of answer choices spastic paralysis and atrophy of muscle tissue flaccid paralysis and atrophy of muscle tissue spastic paralysis and maintaining or increasing muscle tissue flaccid paralysis and maintaining or increasing muscle tissue not enough information is given to determine the correct responsearrow_forwardThe venom of many cobras contains a potent neurotoxin that binds to ligand-gated Na+ channels,causing them to open. Unlike ACh, which binds to and then rapidly unbinds from ligand-gated Na+ channels, the neurotoxin tends to remain bound to ligand-gated Na+ channels. How does this neurotoxin affect the nervous system’s ability to stimulate skeletal muscle contraction? How does it affect the ability of skeletal muscle fibers to respond to stimulation?arrow_forward
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