Asked by Michelle Gonzalez on Jul 04, 2024
Verified
Which of the following is true of pain receptors?
A) Pain receptors differ anatomically.
B) Pain receptors are similar in the type of physical stimuli to which they most readily react.
C) Pain receptors have a much lower threshold for firing than receptors for temperature and touch.
D) Pain receptors react mainly to physical stimuli that distort them or to chemical stimuli that irritate them into action.
Pain Receptors
Sensory neurons located throughout the body that respond to damaging stimuli by sending pain signals to the brain.
Temperature
A measure of the kinetic energy of the particles in an object or substance, indicative of how hot or cold it is.
- Recognize the role of endorphins and the distinction between fast and slow pain pathways.
Verified Answer
HM
Hannah MarcotteJul 06, 2024
Final Answer :
D
Explanation :
Pain receptors, also known as nociceptors, are specialized sensory receptors that react to physical stimuli that distort or damage the tissue or to chemical stimuli that irritate them into action. Unlike receptors for temperature and touch, pain receptors have a much lower threshold for firing. Furthermore, pain receptors differ anatomically, which means that different types of pain may be sensed by different receptors in different parts of the body. Therefore, option A and B are incorrect.
Learning Objectives
- Recognize the role of endorphins and the distinction between fast and slow pain pathways.
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