HUMAN A+P MOD.MASTERING
2nd Edition
ISBN: 9780136919520
Author: AMERMAN
Publisher: PEARSON
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Chapter 13, Problem 8CYR
Summary Introduction
Introduction:
The term “receptor potential of the nervous system” is associated with sensory transduction. Sensory transduction begins at the sensory receptor. The temporary depolarization occurring in the axoplasm because of the opening of mechanically gated Na+ (sodium ions) channels produces receptor potential.
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Once the gated channels are open and positive ions begin to enter the neuron,we have the start of a(n)
A.stimulus
B.resting potential
C.a reaction
D.impulse
What is/are true statements about Action Potentials? Select all that apply.
Group of answer choices:
A. action potentials propagate down axons
B. information is coded through the frequency of action potentials
C. action potentials are slower in myelinated axons
D. action potentials vary depending on the strength of the stimulus
Post synaptic neurons membrane potentials are less negative than resting membrane potentials when this occur
A. Creates a new set point for the resting membrane potential
B. Has a lower propensity to produce an action potential
C. Reacts by generating action potential
D. Higher chance of reaching the potential threshold
Chapter 13 Solutions
HUMAN A+P MOD.MASTERING
Ch. 13.1 - What two subclasses make up the sensory division...Ch. 13.1 - 2. What is a lower motor neuron? How are upper...Ch. 13.1 - In what ways do the somatic and visceral motor...Ch. 13.1 - Prob. 4QCCh. 13.1 - Prob. 5QCCh. 13.1 - What structures are found in a peripheral nerve?Ch. 13.1 - How are sensations detected in the PNS and...Ch. 13.1 - 8. How are motor impulses transmitted from the...Ch. 13.2 - Prob. 1QCCh. 13.2 - 2. What are the Roman numerals and main...
Ch. 13.2 - 3. What are the Roman numerals and main...Ch. 13.2 - List the 12 pairs of cranial nerves in ascending...Ch. 13.2 - Prob. 5QCCh. 13.3 - Prob. 1QCCh. 13.3 - What are the anterior and posterior rami, and what...Ch. 13.3 - 3. What are the key structures supplied by each...Ch. 13.3 - 4. Differentiate between the trunks and cords of...Ch. 13.3 - Prob. 5QCCh. 13.3 - Prob. 6QCCh. 13.3 - Prob. 7QCCh. 13.4 - 1. What is sensory transduction?
Ch. 13.4 - Prob. 2QCCh. 13.4 - 3. What are the three components of a typical...Ch. 13.4 - What is a first-order sensory neurons receptive...Ch. 13.4 - What is the two-point discrimination threshold,...Ch. 13.4 - What is a dermatome?Ch. 13.4 - 7. Why is visceral pain often perceived as...Ch. 13.5 - 1. What are the main differences between an upper...Ch. 13.5 - 2. What is a motor neuron pool?
Ch. 13.5 - What is the general sequence of events for...Ch. 13.6 - Prob. 1QCCh. 13.6 - 2. How do intrafusal and extrafusal muscle fibers...Ch. 13.6 - What are the functions of primary and secondary...Ch. 13.6 - 4. How do Golgi tendon organs and muscle spindles...Ch. 13.6 - How do polysynaptic and monosynaptic reflex arcs...Ch. 13.6 - Prob. 6QCCh. 13.6 - How are the flexion and crossed-extension reflexes...Ch. 13.6 - What are some potential effects of sensory...Ch. 13.6 - How do upper and lower motor neuron disorders...Ch. 13 - Mark the following statements as true or false. If...Ch. 13 - Prob. 2CYRCh. 13 - 3. Define each of the following terms in your own...Ch. 13 - First, write the Roman numeral that corresponds to...Ch. 13 - Prob. 5CYRCh. 13 - Match the following nerves with the structures...Ch. 13 - First-order somatic sensory neurons are...Ch. 13 - Prob. 8CYRCh. 13 - Prob. 9CYRCh. 13 - 10. Merkel cell fibers, tactile corpuscles,...Ch. 13 - 11. Place the following sequence of events for the...Ch. 13 - How do upper and lower motor neurons differ?Ch. 13 - 13. List and describe the basic steps involved in...Ch. 13 - 14. The lower motor neurons that innervate...Ch. 13 - Fill in the blanks:______ detect the degree to...Ch. 13 - Which of the following is the correct order of...Ch. 13 - 17. Mark the following statements as true or...Ch. 13 - Prob. 18CYRCh. 13 - Prob. 1CYUCh. 13 - Prob. 2CYUCh. 13 - Prob. 3CYUCh. 13 - Prob. 1AYKACh. 13 - Jason presents for evaluation after a severe...Ch. 13 - 3. When Mr. Williams goes to the emergency...Ch. 13 - 4. Maria is a 3-year-old who has been diagnosed...Ch. 13 - Another feature of CIPA is anhidrosis, or the...
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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
- What is/are true statements about Action Potentials? Select all that apply. Group of answer choices: A. action potentials propagate down axons B. nformation is coded through the frequency of action potentials C. action potentials are slower in myelinated axons D. action potentials vary depending on the strength of the stimulusarrow_forwardDuring the action potential, which of the following activity is LIKELY to occur? Select one: a. Na+ channels open at the beginning of the action potential, and Na+ moves into the axon b. Na+ channel passages become smaller and get retracted at the beginning of the action potential c. Na+ channels are less active and static throughout the action potential process d. less Na+ is pumped to the axon when the action potential is triggeredarrow_forwardWhich of the following changes to an action potential indicates a larger stimulus? a. Increased frequency b. Increased wavelength c. Increased amplitude d. Increased speedarrow_forward
- The Na+/K+ ATPase pump is a. not required for action potential firing. b. important for long-term maintenance of resting potential. c. important only at the synapse. d. used to stimulate graded potentials.arrow_forwardWhich of the following is true regarding the difference between graded and action potentials? a.) Action potential occur only when the surface of the neuron is myelinated, but graded potentials occur in both in both myelinated and non-myelinated neurons. b.) The magnitude of action potential depends on the magnitude of the stimulus, whereas graded potentials are all or none. c.) The magnitude of graded potential depends on the magnitude of the stimulus, whereas action potentials are all or none.arrow_forwardWhen a very strong stimulus initiates an action potential, the response is: I. a longer-duration action potential II. a higher amplitude action potential III. an increased rate of action potentials I and II OI and III II and III || a longer-duration action potentialarrow_forward
- Which of the following is a correct statement of the all-or-none principle? Select one: U a. A hyperpolarized membrane always results in the production of an action potential b. When a stimulus is applied, it triggers an action potential in the membrane O C. Action potentials occur in all neurons if a stimulus is applied that lowers the membrane potential d. A given stimulus either triggers a typical action potential or does not produce one at allarrow_forwardThe two primary factors that influence the speed of an action potential propagation are axon diameter and a. myelination. b. the type of associated glial cell(s). c. concentration of K+ in the cell. d. the length of the axon.arrow_forwardDetermine whether each statement is true or false. If a statement is false, explain why. A. Voltage gated sodium channels are quick to open and slow to close, while voltage gated potassium channels are quick to open and slow to close. 6. Before a second action potential can be generated, the concentration of sodium and potassium on either side of the cell membrane must be fully restored. C. The strength of an action potential is represented by the amplitude of the wave. A stronger stimulus will generate an action potential with a higher peak than a weaker stimulus. D.. Action potentials travel in a non-decremental manner down the axon, with the voltage constantly being regenerated along the way, unlike graded potentials which quickly diminish over short distances. E. Contiguous conduction is faster than saltatory conduction. F. Action potentials originate in the axon hillock and travel down the axon to the terminal boutons (pre-synaptic axon terminals).arrow_forward
- A. Is an action potential more or less likely when the consumption of the Fugu toxin and is stimulated with a neuron with a supra-threshold stimulus? B. Which (flaccid or tonic) is the result in this case? What would be the associated physical symptoms of this condition? C. Briefly describe the pharmacological/clinical/commercial uses of this toxin and its derivatives.arrow_forwardDuring a relative refractory period of an action potential A. Another action potential can be fired, it just takes a greater stimulus for the membrane potential to reach threshold B. Na+ channels are either already open or are inactivated therefore the membrane absolutely can not produce another action potential, no matter how intense the stimulus C. Ca++ flows out of the cell, causing hyperpolarization and a need for a greater stimulus to generate the action potential D. The presynaptic neuron "tells" the postsynaptic neuron about the "relative" strength of signal E. None of the above are correctarrow_forwardA stimulus causes a change in permeability of neural membranes, which begins the process of transmitting an impulse. If the stimulus reaches the threshold potential of a neuron, an action potential is generated. Select the numbers of the statements below that occur once the threshold potential is reached. 1. Sodium ions flow into the neuron. 2. Sodium ions flow out of the neuron. 3. The membrane potential becomes positive. 4. The membrane potential becomes negative. 5. Voltage-gated potassium channels open. 6. Voltage-gated potassium channels close. 7. Potassium ions flow into the neuron. 8. Potassium ions flow out of the neuron. Place the numbers in order from the first event to the last event: andarrow_forward
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