Mechanoreceptors of the Skin
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Questions and Answers

Which type of sensory receptors are most common in the somatic sensory system?

  • Photoreceptors
  • Mechanoreceptors (correct)
  • Chemoreceptors
  • Thermoreceptors

Which of the following is NOT a function of mechanoreceptors in the body?

  • Monitoring stretching of the digestive organs and urinary bladder
  • Monitoring force against the teeth (correct)
  • Monitoring pressure in the heart and blood vessels
  • Monitoring skin contact

What is the largest and best-studied receptor among the mechanoreceptors of the skin?

  • Meissner's corpuscles
  • Pacinian corpuscles (correct)
  • Ruffini's endings
  • Merkel's disks

Where are Ruffini's endings found?

<p>In both hairy and glabrous skin (B)</p> Signup and view all the answers

What is the size of Meissner's corpuscles compared to Pacinian corpuscles?

<p>They are much smaller (A)</p> Signup and view all the answers

Where are Merkel's disks located?

<p>Within the epidermis (C)</p> Signup and view all the answers

What do Krause end bulbs look like?

<p>Knotted balls of string (D)</p> Signup and view all the answers

Which type of mechanical energy can the skin NOT sense?

<p>Pressure (C)</p> Signup and view all the answers

Where are Pacinian corpuscles most densely located in the human body?

<p>In the fingers (D)</p> Signup and view all the answers

What is the function of mechanoreceptors in the body?

<p>Monitoring physical distortion (C)</p> Signup and view all the answers

Which type of mechanoreceptor has a small receptive field?

<p>Merkel's disks (D)</p> Signup and view all the answers

Which type of mechanoreceptor has a large receptive field?

<p>Pacinian corpuscles (C)</p> Signup and view all the answers

Which type of mechanoreceptor is rapidly adapting?

<p>Meissner's corpuscles (C)</p> Signup and view all the answers

Which type of mechanoreceptor is slowly adapting?

<p>Merkel's disks (B)</p> Signup and view all the answers

Which sensory system uses facial vibrissae to sense the local environment?

<p>Whiskers on the face (C)</p> Signup and view all the answers

Which sensory system is a major sensory system for some animals?

<p>Whiskers on the face (D)</p> Signup and view all the answers

Which method did Ã…ke Vallbo and his colleagues develop?

<p>Recording from single sensory axons in the human arm (B)</p> Signup and view all the answers

What does it feel like when a single hair on the back of your arm is brushed with the tip of a pencil?

<p>A mosquito bite (B)</p> Signup and view all the answers

What can be derived by a rat by waving its facial vibrissae (whiskers)?

<p>Information about the texture of nearby objects (C)</p> Signup and view all the answers

What did Swedish neuroscientist Ã…ke Vallbo and his colleagues evaluate?

<p>The perceptions produced by various mechanical stimuli (B)</p> Signup and view all the answers

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