Human Physiology: An Integrated Approach (8th Edition)
8th Edition
ISBN: 9780134605197
Author: Dee Unglaub Silverthorn
Publisher: PEARSON
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Chapter 10, Problem 17RQ
Summary Introduction
Introduction: The energy is carried by the sound waves in the process of hearing. These waves are alternating peaks of compressed air and valleys in which molecules are farther apart. The sound waves are guided to the internal ear by the ear pinna.
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For a second action potential to be fired an ......threshold must be reached......... the absolute refractory period.
Choice
A. Lower, after
B. Lower, before
C. Higher, during
D. Higher, after
Which 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.
A graded potential (a) decreases with distance from the point of stimulation. (b) spreads passively because of local currents. (c) may involve either depolarization or hyperpolarization. (d) a, b, and c are correct.
Chapter 10 Solutions
Human Physiology: An Integrated Approach (8th Edition)
Ch. 10.1 - What advantage do myelinated axons provide?Ch. 10.1 - What accessory role does the outer ear (the pinna)...Ch. 10.1 - Prob. 3CCCh. 10.1 - In Figure 10.5, what kind(s) of ion channel might...Ch. 10.1 - How do sensory receptors communicate the intensity...Ch. 10.1 - Prob. 6CCCh. 10.2 - Prob. 7CCCh. 10.2 - Prob. 8CCCh. 10.2 - Your sense of smell uses phasic receptors. What...Ch. 10.3 - Create a map or diagram of the olfactory pathway...
Ch. 10.3 - Create a map or diagram that starts with a...Ch. 10.3 - Prob. 12CCCh. 10.3 - Are olfactory neurons pseudounipolar, bipolar, or...Ch. 10.3 - Prob. 14CCCh. 10.3 - Prob. 15CCCh. 10.4 - Prob. 16CCCh. 10.4 - Prob. 17CCCh. 10.5 - Prob. 18CCCh. 10.5 - Would a cochlear implant help a person who suffers...Ch. 10.5 - Prob. 20CCCh. 10.5 - Prob. 21CCCh. 10.5 - Prob. 22CCCh. 10.5 - Prob. 23CCCh. 10.6 - What functions do the aqueous humor serve?Ch. 10.6 - Prob. 25CCCh. 10.6 - Prob. 26CCCh. 10.6 - Prob. 27CCCh. 10.6 - Prob. 28CCCh. 10.6 - Prob. 29CCCh. 10.6 - Some vertebrate animals that see well in very low...Ch. 10.6 - Prob. 31CCCh. 10.6 - Macular degeneration is the leading cause of...Ch. 10.6 - Prob. 33CCCh. 10.6 - Draw a map or diagram to explain...Ch. 10 - What is the role of the afferent division of the...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - When a sensory receptor membrane depolarizes (or...Ch. 10 - Prob. 9RQCh. 10 - The organization of sensory regions in the _____...Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Which structure of the inner ear codes sound for...Ch. 10 - Prob. 17RQCh. 10 - Prob. 18RQCh. 10 - Prob. 19RQCh. 10 - Prob. 20RQCh. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 23RQCh. 10 - Prob. 24RQCh. 10 - Prob. 25RQCh. 10 - Trace the neural pathways involved in olfaction....Ch. 10 - Prob. 27RQCh. 10 - Prob. 28RQCh. 10 - Prob. 29RQCh. 10 - Map the following terms related to vision. Add...Ch. 10 - Prob. 31RQCh. 10 - Prob. 32RQCh. 10 - Prob. 33RQCh. 10 - Prob. 34RQCh. 10 - Prob. 35RQCh. 10 - Consuming alcohol depresses the nervous system and...Ch. 10 - Prob. 37RQCh. 10 - A clinician shines a light into a patients left...Ch. 10 - An optometrist wishes to examine a patients...Ch. 10 - The iris of the eye has two sets of antagonistic...Ch. 10 - As people age, their ability to see at night...Ch. 10 - The relationship between focal length (F) of a...
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- b) You are having a shower with warm water, and all of a sudden, the water turns ice cold! How do you think your temperature sensory neurons code this very noticeable and strong stimulus? a) They produce larger EPSPS at the same rate as under the warm water condition. b) They produce larger, but the same number of, action potentials as under the warm water condition. c) They produce smaller EPSPS at a higher rate than under the warm water condition. d) They produce the same number and size action potentials that travel faster down the neurons than under the warm water condition. e) They produce more action potentials of the same size as under the warm water conditionarrow_forwardMatch the names of the cells in column B with the function they perform, shown in column A.Column A Column B(1) line the central cavity of the brain (a) astrocytes(2) form myelin in the CNS (b) ependymal cells(3) form myelin in the PNS (c) microglial cells(4) remove neurotransmitters in the CNS (d) oligodendrocytes(5) regulate ionic composition of thefluid around neurons in the CNS (e) satellite cells (f) Schwann cells(6) CNS phagocytesarrow_forward9) the period after an initial stimulus when a neuron can not be sensitive to another stimulus is the ....? a) resting period b) relative refractory period c) depolarization d) absolute refractory periodarrow_forward
- What is a typical speed of action potential propagation in the absence of myelination? (Not the maximum speed, just the typical speed). A) 1 m/min B) 1 m/sec C) 10 m/sec D) 100 m/sec E) 1000 m/secarrow_forward(b) Use Figure Q1(b) of an action potential to answer questions (i) until (iv) below. Choose the correct letter to represent each condition. (i) The neuron cannot fire an action potential because it is in a refractory period. (ii) The membrane potential is about -70 mV. (iii) The voltage-gated Na+ channels activation gates are closed, but the inactivation gates are open. (iv) Both gates of the voltage-gated Na+ channels are open. C Threshold B A E Figure Q1 (b)arrow_forwardThe loss of positive ions from the interior of a neuron produces, (a) depolarization. (b) threshold. (c) hyperpolarization. (d) an action potential.arrow_forward
- all of the following phrases decribe the same phenomenon except for one: a. action potential b. eletrical impusle c. power stroke d. depolarizationarrow_forwardWhen is an action potential triggered? (Choose 1) When IPSPs exceeds EPSPs When EPSPs exceeds IPSPs When chloride channels open When potassium channels openarrow_forwardDuring the refractory period a) if a neuron reaches threshold the action potential goes to completion b) No stimulus of any strength will trigger a new action potential c) It is possible to trigger a new action potential but only with an unusually strong stimulus d) The signal grows weaker with distance e) The neuron fires at its maximum voltage if a stimulus depolarizes the neuron to thresholdarrow_forward
- (a) Explain the difference between an EPSP and an IPSP. (b) What specifically determines whether an EPSP or IPSP will be generated at the postsynaptic membrane?arrow_forwardTaylor accidentally dips his fingers into a cup filled with steaming hot coffee. He immediately withdraws his hand and then exclaims “ouch!”What is the correct order of the nervous system structures involved in the scenario described above? Select one: a. sensory neuron, effector, motor neuron, interneuron b. motor neuron, receptor, sensory neuron, effector c. receptor, sensory neuron, interneuron, motor neuron d. sensory neuron, interneuron, effector, motor neuronarrow_forwardSelect the best answer or answers from the choices given: Identify the neuronal circuits described by choosing the correct response from the key.arrow_forward
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