Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 48, Problem 7TYK
Summary Introduction
Introduction: Neurons refer to a specialized cell designed to transmit information to nerves, muscles, or gland cells. It sends electrical signals throughout the body and communicates between cells through short-distance chemical signals.
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Given what you already know about the sensation of pain, what is the expected change in membrane potential when pain is felt by sensory receptors?
Select one:
a. The nerve impulses increase in strength and lower the threshold potential.
b. The nerve impulses occur more frequently, thereby transmitting more action potentials according to the intensity of pain.
c. The nerve impulses occur more frequently and prevent neurons from entering the refractory period.
d. The nerve impulses increase in strength, thereby making the maximum membrane potential higher than normal.
Which of these was NOT a theory of a nerve function near the end of the 17th century?
A. nerve signal through secreted droplets of fluid
B. Nerve signal by actual movement of cells from different body areas
C. Spirits running through hollow nerves
D. Nerves signal through vibrations
What are receptors? Discuss how these receptors respond to stimuli.
Chapter 48 Solutions
Biology - Study Guide
Ch. 48 - Prob. 1IQCh. 48 - a. What is the principal cation inside the cell?...Ch. 48 - The following diagram shows the changes in...Ch. 48 - Prob. 4IQCh. 48 - Prob. 5IQCh. 48 - Prob. 6IQCh. 48 - Prob. 7IQCh. 48 - Develop a flowchart or diagram or write a...Ch. 48 - Prob. 1TYKCh. 48 - Prob. 2TYK
Ch. 48 - During a neurons resting state a. there are more...Ch. 48 - Which of the following contribute(s) to the...Ch. 48 - Prob. 5TYKCh. 48 - Prob. 6TYKCh. 48 - Prob. 7TYKCh. 48 - After the rapid depolarization of an action...Ch. 48 - Nodes of Ranvier are a. gaps where Schwann cells...Ch. 48 - Prob. 10TYKCh. 48 - Signal transmission is faster in myelinated axons...Ch. 48 - Which of the following statements concerning...Ch. 48 - Prob. 13TYKCh. 48 - Prob. 14TYKCh. 48 - Prob. 15TYKCh. 48 - Prob. 16TYKCh. 48 - Prob. 17TYKCh. 48 - If the binding of a neurotransmitter to its...
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- Which of the following statements about the intensity of a nerve response is true? Select one: a. A stimulus reaching the threshold level may or may not propagate a nerve impulse. b. A small voltage shift and a large voltage shift will yield the same nerve impulse as long as the stimulus reaches the threshold level. c. All stimuli, regardless of the strength, will always generate a nerve impulse. d. A stimulus resulting in a greater voltage shift will result in a stronger nerve impulse and increased sense of perception in the brain.arrow_forwardExplain why a person with a severe brain damage could make a reflex response to a stimulus applied to the hand or foot?arrow_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 sense of pain is transduces by tonic receptors. What adaptive significance might this have? Give typing answer with explanation and conclusionarrow_forwardExplain a way that sensory nervous system transduce stimuli with different strengths using concept of action potential frequencyarrow_forwardWhich is an incorrect statement about simple nerve nets? a- Neurons are randomly poisoned relative to one another. b- They control the contraction and expansion of the gastrovascular cavity. c- They don’t contain nerves. d- They are organized into ganglia.arrow_forward
- Construct a unit concept map to show the relationships among the following set of terms: action potential, arbor vitae, brainstem, diencephalon, epineurium, gray matter, lateral horn, nerve fiber, node of Ranvier, synaptic cleftarrow_forwardCertain cells in the retina respond differently to the direction in which objects move. To understand how cells in the retina respond to different visual stimuli, the activity of a retinal ganglion cell was measured while a square moved across its visual field. Which statement best explains the increases in voltage during the periodic spikes? A. Depolarization of a neuron past a threshold voltage causes sodium channels to close. B. Depolarization of a neuron past a threshold voltage causes sodium channels to open. C. Depolarization of a neuron past a threshold voltage causes potassium channels to close. D. Depolarization of a neuron past a threshold voltage causes potassium channels to open.arrow_forwardHow does the frequency of action potentials in the primary sensory neuron code for stimulus intensity? (Human Physiology)arrow_forward
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