ANAT & PHYS: INTEGRATIVE APPROACH
ANAT & PHYS: INTEGRATIVE APPROACH
3rd Edition
ISBN: 9781260577853
Author: McKinley
Publisher: MCG
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Chapter 16, Problem 1DYB
Summary Introduction

Concept introduction: The sensory receptors are the nerves which are stimulated by a physical stimulus and create nerve impulse to send information to the brain. The tactile receptors are the most numerous types of sensory receptors. These receptors are present in the skin and mucous membranes. The dendritic nerve endings of tactile receptors are either unencapsulated or encapsulated.

Expert Solution & Answer
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Answer to Problem 1DYB

Correct answer: Unencapsulated dendritic endings of sensory neurons are called free nerve endings.

Therefore, option b. is correct.

Explanation of Solution

Reason for the correct answer:

Option b. is given as “free nerve endings”.

The free nerve endings are the apex of any tactile sensory receptor and are not covered by any protective layer on their end. These receptors are found closest to the skin surface and mucus membrane. The free nerve endings are sensitive to pain and temperature stimuli.

Hence, option b. is correct.

Reasons for incorrect answers:

Option a. is given as “lamellated corpuscles”.

The lamellated corpuscles are covered by the connective tissue and specialized glial cells. They are located at the reticular layer of the dermis, soles of the feet, breasts, and the external ganglia as well as walls of the some organs. Hence, option a. is incorrect.

Option c. is given as “bulbous corpuscles”.

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

Option d. is given as “end bulbs”.

These are rounded or oval structures located at the dermis, mucous membranes of the nasal cavity, oral cavity, vagina, and the anal canal. These receptors are covered by the connective tissue and specialized glial cells. Hence, option d. is incorrect.

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

Conclusion

Free nerve endings are the receptors that are unencapsulated.

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Chapter 16 Solutions

ANAT & PHYS: INTEGRATIVE APPROACH

Ch. 16.2 - Prob. 7LOCh. 16.2 - What are the three types of unencapsulated tactile...Ch. 16.2 - Prob. 8LOCh. 16.2 - Prob. 6WDLCh. 16.3 - Prob. 9LOCh. 16.3 - Prob. 10LOCh. 16.3 - What is the role of the mucus in detection of...Ch. 16.3 - Prob. 8WDLCh. 16.3 - Prob. 11LOCh. 16.3 - Prob. 12LOCh. 16.3 - Prob. 13LOCh. 16.3 - Prob. 1WDTCh. 16.3 - Prob. 9WDLCh. 16.3 - Prob. 10WDLCh. 16.4 - LEARNING OBJECTIVE 14. Describe the accessory...Ch. 16.4 - Prob. 11WDLCh. 16.4 - Prob. 12WDLCh. 16.4 - Prob. 15LOCh. 16.4 - What are the three eye tunics; what is the primary...Ch. 16.4 - Compare the anatomic structure of the cornea and...Ch. 16.4 - What are the functions of the vitreous humor and...Ch. 16.4 - Prob. 16LOCh. 16.4 - Prob. 17LOCh. 16.4 - Prob. 16WDLCh. 16.4 - Prob. 18LOCh. 16.4 - Prob. 19LOCh. 16.4 - LEARNING OBJECTIVE 20. Explain the bleaching...Ch. 16.4 - What are the differences between rods and cones...Ch. 16.4 - How does dark adaptation differ from light...Ch. 16.4 - What occurs during phototransduction of light?Ch. 16.4 - Prob. 21LOCh. 16.4 - Prob. 22LOCh. 16.4 - Prob. 2WDTCh. 16.4 - Prob. 20WDLCh. 16.4 - Prob. 21WDLCh. 16.5 - Prob. 23LOCh. 16.5 - Prob. 24LOCh. 16.5 - Prob. 25LOCh. 16.5 - Prob. 3WDTCh. 16.5 - Prob. 22WDLCh. 16.5 - Prob. 23WDLCh. 16.5 - Prob. 24WDLCh. 16.5 - Prob. 26LOCh. 16.5 - Prob. 27LOCh. 16.5 - Prob. 28LOCh. 16.5 - What are the steps for detecting sounds?Ch. 16.5 - Compare the difference in how we perceive pitch...Ch. 16.5 - Prob. 29LOCh. 16.5 - Prob. 27WDLCh. 16.5 - Prob. 30LOCh. 16.5 - Prob. 31LOCh. 16.5 - Prob. 32LOCh. 16.5 - Prob. 28WDLCh. 16.5 - Prob. 29WDLCh. 16 - Prob. 1DYBCh. 16 - Prob. 2DYBCh. 16 - Prob. 3DYBCh. 16 - Prob. 4DYBCh. 16 - Prob. 5DYBCh. 16 - Prob. 6DYBCh. 16 - _____ 7. Which ear structure is correctly matched...Ch. 16 - Prob. 8DYBCh. 16 - Prob. 9DYBCh. 16 - Prob. 10DYBCh. 16 - Prob. 11DYBCh. 16 - Prob. 12DYBCh. 16 - Prob. 13DYBCh. 16 - Prob. 14DYBCh. 16 - Prob. 15DYBCh. 16 - Prob. 16DYBCh. 16 - Prob. 17DYBCh. 16 - Prob. 18DYBCh. 16 - Describe the pathway by which sound waves enter...Ch. 16 - Explain how the vestibule and semicircular canals...Ch. 16 - Prob. 1CALCh. 16 - Prob. 2CALCh. 16 - Prob. 3CALCh. 16 - Prob. 4CALCh. 16 - Prob. 5CALCh. 16 - Prob. 1CSLCh. 16 - Prob. 2CSLCh. 16 - Prob. 3CSL
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