ANATOMY AND PHYSIOLOGY ONLINE MATERIALS,
ANATOMY AND PHYSIOLOGY ONLINE MATERIALS,
4th Edition
ISBN: 9781265761493
Author: McKinley
Publisher: MCG
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 16, Problem 1DYKB

_____ 1. Unencapsulated, terminal endings of dendrites of sensory neurons are called

  1. a. lamellated corpuscles.
  2. b. free nerve endings.
  3. c. bulbous corpuscles.
  4. d. end bulbs.
Expert Solution & Answer
Check Mark
Summary Introduction

Introduction:

The un encapsulated tactile receptors are the tips or apex of sensory neurons which are uncovered. There are three types of unencapsulated nerve receptors: free nerve endings, root hair plexuses, and tactile discs.

Answer to Problem 1DYKB

Correct answer:

Free nerve endings are the tactile receptors which are unencapsulated on the apex.

Therefore, option (b) is correct.

Explanation of Solution

Reason for the correct statement:

Option (b) is given as “free nerve endings”. The free nerve endings are the apex of any tactile sensory receptor which is not covered by any protective layer on its end. These receptors are found very close to superficial layer of skin. The free nerve endings are sensitive to pain and temperature stimuli. These may be phasic receptor or tonic receptor.

Hence, option (b) is correct.

Reasons for incorrect statements:

Option (a), is given as “lamellated corpuscles”.

These receptors are found on the skin of fingers which is sensitive to touch and pressure. These are oval in shape and the apex of receptor is covered with a protective layer. Hence, it is incorrect

Option (c), is given as “bulbous corpuscles”.

These nerve endings are also called as ruffini endings. These receptors are found in cutaneous tissues. These are spindle shaped neurons and have a covering layer. Hence, it is incorrect.

Option (d), is given as “end bulbs”.

These are rounded or oval structures found at the nerves fiber endings. These receptors are sensitive to touch, pain and cold. These receptors are covered with a protective layer. Hence, it is incorrect.

Hence, options (a), (c), and (d) are incorrect.

Conclusion

Free nerve endings are the receptors which are unencapsulated. Lamellated corpuscles, bulbous corpuscles, and end bulbs are the nerve ends which contain a protective covering on their tips.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Which of the following is the process that is "capable of destroying all forms of microbial life"? Question 37 options: Surgical scrub Sterilization Chemical removal Mechanical removal
After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…
What are Clathrin coated vesicles and what is their function?

Chapter 16 Solutions

ANATOMY AND PHYSIOLOGY ONLINE MATERIALS,

Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Body Structures & Functions Updated
Biology
ISBN:9780357191606
Author:Scott
Publisher:Cengage
Text book image
Medical Terminology for Health Professions, Spira...
Health & Nutrition
ISBN:9781305634350
Author:Ann Ehrlich, Carol L. Schroeder, Laura Ehrlich, Katrina A. Schroeder
Publisher:Cengage Learning
Text book image
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Text book image
Comprehensive Medical Assisting: Administrative a...
Nursing
ISBN:9781305964792
Author:Wilburta Q. Lindh, Carol D. Tamparo, Barbara M. Dahl, Julie Morris, Cindy Correa
Publisher:Cengage Learning
Text book image
Fundamentals of Sectional Anatomy: An Imaging App...
Biology
ISBN:9781133960867
Author:Denise L. Lazo
Publisher:Cengage Learning
Text book image
Body Structures & Functions
Biology
ISBN:9781285695495
Author:Scott
Publisher:Cengage
The Sensorimotor System and Human Reflexes; Author: Professor Dave Explains;https://www.youtube.com/watch?v=M0PEXquyhA4;License: Standard youtube license