Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
10th Edition
ISBN: 9780321908599
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
Publisher: PEARSON
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Chapter 15, Problem 7RQ
Summary Introduction
To determine:
The three types of mechanoreceptors respond to stretching, compression, twisting, or other distortions of their plasma membrane
Introduction:
The mechanically gated ion channels present in some membranes can show response to stretching, compression, twisting, or other distortions of the membrane known as mechanoreceptors.
The three types of mechanoreceptors are: Tactile receptors, Baroreceptors, and Proprioceptors.
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You want to record membrane potential changes in axons of neurons that process different types somatosensory information. Which sequence ranks the speed of maximum firing rate from slowest to fastest that you predict you will record
a)
muscle spindle < cutaneous mechanoreceptor < pain and temperature
b)
pain and temperature < muscle spindle < cutaneous mechanoreceptor
c)
cutaneous mechanoreceptor < pain and temperature < muscle spindle
d)
cutaneous mechanoreceptor < muscle spindle < pain and temperature
e)
muscle spindle < pain and temperature < cutaneous mechanoreceptor
f)
pain and temperature < cutaneous mechanoreceptor < muscle spindle
Applying a pressure stimulus to the fluid-filled capsule of an isolated Pacinian corpuscle causes a brief burst of action potentials in the afferent neuron, which ceases until the pressure is removed, at which time another brief burst of action potentials occurs. If an experimenter removes the capsule and applies pressure directly to the afferent neuron ending, action potentials are continuously fired during the stimulus. Explain these results in the context ofadaptation.
Describe the general process of transduction in a receptor that is a cell separate from the afferent neuron. Include in your description the following terms: specificity, stimulus, receptor potential?
Chapter 15 Solutions
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
Ch. 15 - What do we call the bodys specialized cells that...Ch. 15 - Prob. 2CPCh. 15 - Prob. 3CPCh. 15 - Define adaptation.Ch. 15 - List the major types of general sensory receptors,...Ch. 15 - Identify the three classes of mechanoreceptors.Ch. 15 - What would happen to you if the information from...Ch. 15 - Prob. 8CPCh. 15 - Which spinal tract carries action potentials...Ch. 15 - Prob. 10CP
Ch. 15 - Prob. 11CPCh. 15 - Prob. 12CPCh. 15 - Prob. 13CPCh. 15 - Prob. 1RQCh. 15 - __________ receptors are normally inactive, but...Ch. 15 - Prob. 3RQCh. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - What are the three major somatic sensory pathways...Ch. 15 - Prob. 9RQCh. 15 - Which three motor tracts make up the medial...Ch. 15 - Prob. 11RQCh. 15 - Prob. 12RQCh. 15 - What three steps are necessary for transduction to...Ch. 15 - Differentiate between a tonic receptor and a...Ch. 15 - What is a motor homunculus? How does it differ...Ch. 15 - Prob. 16RQCh. 15 - Prob. 17RQCh. 15 - Prob. 18RQCh. 15 - By which structures and in which pan of the brain...Ch. 15 - Prob. 20RQCh. 15 - Prob. 21RQCh. 15 - Prob. 22RQCh. 15 - Prob. 23RQCh. 15 - Prob. 1CCCh. 15 - Prob. 2CC
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- What is the importance of Receptor Field Overlap?arrow_forwardb) 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_forwardWhat does a receptor detect?arrow_forward
- Which of the following is the correct sequence of the neural chain of events set in motion by an environmental stimulus? (A) Receptors, afferent neurons, interneurons, efferent neurons, effectors (B) Receptors, efferent neurons, interneurons, afferent neurons, effectors (C) Interneurons, effectors, receptors, afferent neurons, efferent neurons (D) Effectors, interneurons, receptors, afferent neurons, efferent neurons (E) Effectors, receptors, afferent neurons, effer- ent neurons, interneuronsarrow_forwardWhat is the difference of depolarization and hyperpolarization? Why do cold receptors depolarize quickly and warm receptors hyperpolarize quickly?arrow_forwardFill out the information indicated for tactile receptors in the table below: Name Structure Location Function. (encapsulated or unencapsulated?) Tactile disc Tactile corpuscle Free nerve endings End bulb Bulbous corpuscle Root hair plexus Lamellated corpusclearrow_forward
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- An example of a sensory neuron is one that leads from a pain receptor in the finger to the spinal cord. A pin can be pressed against the skin without eliciting a response from the pain receptor. However, if the pin is jabbed into the finger, the pain receptor may be stimulated and the finger would quickly be withdrawn through a reflex arc. How do we sense different types of pain (very painful vs. not painful at all)? Using your knowledge of threshold potential and the all-or-none principle, explain how it is possible to sense different levels of pain.arrow_forwardBased on the same attached figure as above (Figure 10.9 in your textbook), what kind of channel permits K+ to pass through the apical-end membrane in hair cells of the ear? (A) Spiral ganglion Tectorial membrane Scala vestibuli Inner hair cells -45 mV Scala tympani Outer hair cells Scala media Organ of Corti Perilymph Low K+ 0mV Endolymph High K+ +80 mV (B) Stria vascularis Basilar membrane Ca²+ Afferent. nerve Depolarization O Nucleus wwww. 00 -Depolarization. Vesicles -Transmitter To brain C₂24arrow_forwardYou are recording from a touch receptor in skin. When you stimulate a spot on the skin, the receptor fires continuously until you stop the skin stimulation. Which of the following pieces of information would you need to be able to identify what kind of receptor this is? Group of answer choices Whether the area of skin that can activate this receptor is big or small Whether the receptor sends its output to the somatosensory cortex or not You don’t need any more information; you can identify this receptor just from the information provided Whether the touch receptor is connected to an Alpha-Delta fiber or a C-fiberarrow_forward
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