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Chapter 1: Q. 1 (page 7)

Which of the following statements about mechanoreceptors is false? a. Pacini corpuscles are found in both glabrous and hairy skin. b. Merkel鈥檚 disks are abundant on the fingertips and lips. c. Ruffini endings are encapsulated mechanoreceptors. d. Meissner鈥檚 corpuscles extend into the lower dermis.

Short Answer

Expert verified

Option d is correct.

Step by step solution

01

Step 1. Introduction

Mechanoreceptors are the sensory receptors that answer to mechanical pressure or distortion.

02

Step 2. Explanation of the correct option

Option d is correct as Messiner's corpuscles also known as tactile corpuscles are found in the upper epidermis and do not extend to the lower epidermis, hence statement is false.

03

Step 3. Explanation of the incorrect option

Option a is incorrect as Pacini corpuscles are situated in the dermis of glabrous and hairy skin which is a true statement.

Option b is incorrect as Merkel's disks are present in fingers, palms, soles of feet, and lips. Hence this statement is true.

Option c is incorrect as Raffini endings are present on glabrous and hairy skin and these are encapsulated mechanoreceptors. Hence this statement is true.

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