Chapter 47: Pain

Chapter 47: Pain

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Pain is thought of as

ANS:  A

Because pain is a subjective experience, defining and assessing it are difficult. Pain is not always associated with a change in vital signs. Pain is whatever the experiencing person says it is, and may vary according to each individual. Most pain begins in the periphery when free nerve endings called nociceptors are stimulated.

REF:   Pg. 959

2. The gate control theory of pain transmission predicts that activity in touch receptors will

ANS:  B

The gate control theory is used to explain how stimulation of large “touch” neurons could inhibit the transmission of nociceptor impulses. Central to the gate control theory is the capacity for interneurons in the spinal cord to modify the transmission of nociceptor impulses. The gate control theory is not based on a theory that activity in touch receptors will enhance perception of pain. Opioid receptors are thought to be the mediators of presynaptic inhibition. One way to inhibit synaptic transmission is through presynaptic inhibition of substance P release from nociceptor neurons.

REF:   Pg. 962

3. Referred pain may be perceived at some distance from the area of tissue injury, but generally felt

ANS:  C

Referred pain is perceived in an area other than the site of the injury. It is often felt at some distance from the point of nociceptor activation. Pain is generally referred to other structures in the same sensory dermatome. The brain cannot differentiate the two sources of pain signals and tends to attribute the visceral pain to a body surface location regardless of on which side of the body the injury occurs and on which side of the body the referred pain is felt. Referred pain is not felt with less intensity. Referred pain is not perceived at a distance that is within 10 to 15 cm.

REF:   Pg. 970