Fundamentals of Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134396026
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 (11th Edition)
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_forwardList the four major features that define the interactions betweenreceptors and their ligands?arrow_forward
- What does a receptor detect?arrow_forwardWhich 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_forward
- Based on the attached figure (Figure 9.8 in the textbook), what is the actual membrane mechanism mediating the light-induced hyperpolarization of a photoreceptor? (A) Dark Rod outer segment CGMP 0 CGMP CGMP CGMP K+ Rod inner segment Inside Obelecendra EX Ca²+ Na+ Outside Na+ influx, K+ efflux: Depolarization (B) Light Rod outer segment LIELITI CGMP reduced Rod inner segment Ca2+ Na Inside Outside Reduced Na+ influx, K* efflux: Hyperpolarizationarrow_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_forwardWhy can a greater-than-normal stimulus trigger an AP during the relative refractory period but not during the absolute refractory period?arrow_forward
- 9) 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_forwardwhat is an example of a sensory neuron being changed by external physical stimulation?arrow_forwardGiven that receptive fields for touch do not exhibit uniform sensitivity across their whole extent, describe the two patterns of response sensitivity. And do these two types convey essentially the same or different information to the brain?arrow_forward
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