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The strength of a stimulus is communicated to the Axon terminal button by_ of action potentials a. all or none b. summation c. frequency coding d. channel gating e. none of the above

The strength of a stimulus is communicated to the Axon terminal button by_ of action potentials a. all or none b. summation c. frequency coding d. channel gating e. none of the above

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**The Strength of a Stimulus and Its Communication to the Axon Terminal: An Educational Insight** The ability of neurons to communicate the strength of a stimulus to the axon terminal button is a fundamental principle in neuroscience. This process is accomplished through various mechanisms, but key among them is the modulation of action potentials. Below is a multiple-choice question that delves into this aspect of neural communication: --- *The strength of a stimulus is communicated to the Axon terminal button by ________ of action potentials:* a. **all or none** b. **summation** c. **frequency coding** d. **channel gating** e. **none of the above** --- **Explanation of Options:** - **All or None (a):** This principle states that an action potential either occurs fully or not at all. However, it is not directly related to the strength of a stimulus. - **Summation (b):** This refers to the cumulative effect of multiple synaptic inputs. While important in generating action potentials, it does not directly measure the strength of the stimulus communicated to the axon terminal. - **Frequency Coding (c):** This is the correct answer. Frequency coding refers to the process by which the strength of a stimulus is encoded by the frequency of action potentials. A stronger stimulus will generate action potentials at a higher frequency. - **Channel Gating (d):** This involves the opening and closing of ion channels, which are vital for initiating action potentials but do not communicate the stimulus strength directly. - **None of the Above (e):** This option can be disregarded as frequency coding is a valid and accurate explanation. Through understanding frequency coding, learners can appreciate how nerve cells convey information about stimulus intensity and contribute to the processing and response mechanisms within the nervous system.
Transcribed Image Text:**The Strength of a Stimulus and Its Communication to the Axon Terminal: An Educational Insight** The ability of neurons to communicate the strength of a stimulus to the axon terminal button is a fundamental principle in neuroscience. This process is accomplished through various mechanisms, but key among them is the modulation of action potentials. Below is a multiple-choice question that delves into this aspect of neural communication: --- *The strength of a stimulus is communicated to the Axon terminal button by ________ of action potentials:* a. **all or none** b. **summation** c. **frequency coding** d. **channel gating** e. **none of the above** --- **Explanation of Options:** - **All or None (a):** This principle states that an action potential either occurs fully or not at all. However, it is not directly related to the strength of a stimulus. - **Summation (b):** This refers to the cumulative effect of multiple synaptic inputs. While important in generating action potentials, it does not directly measure the strength of the stimulus communicated to the axon terminal. - **Frequency Coding (c):** This is the correct answer. Frequency coding refers to the process by which the strength of a stimulus is encoded by the frequency of action potentials. A stronger stimulus will generate action potentials at a higher frequency. - **Channel Gating (d):** This involves the opening and closing of ion channels, which are vital for initiating action potentials but do not communicate the stimulus strength directly. - **None of the Above (e):** This option can be disregarded as frequency coding is a valid and accurate explanation. Through understanding frequency coding, learners can appreciate how nerve cells convey information about stimulus intensity and contribute to the processing and response mechanisms within the nervous system.
**Question: Which of the following statements is FALSE?** a. graded potentials can sum over time and space, action potential **cannot** b. action potentials have refractory periods, graded potentials do **not** c. action potentials are all-or-none, graded potentials are **not** d. graded potentials and action potentials are caused by ions moving through open **channels** e. **all of the above statements are true** (if all of the above are true this is the correct answer) --- This question prompts the reader to identify the false statement about the differences and characteristics of graded and action potentials. Each statement is either confirming or contrasting aspects of these two types of electrical signals in neurons.
Transcribed Image Text:**Question: Which of the following statements is FALSE?** a. graded potentials can sum over time and space, action potential **cannot** b. action potentials have refractory periods, graded potentials do **not** c. action potentials are all-or-none, graded potentials are **not** d. graded potentials and action potentials are caused by ions moving through open **channels** e. **all of the above statements are true** (if all of the above are true this is the correct answer) --- This question prompts the reader to identify the false statement about the differences and characteristics of graded and action potentials. Each statement is either confirming or contrasting aspects of these two types of electrical signals in neurons.
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