Chapter 16: Pain, Temperature Regulation, Sleep, and Sensory Function

Chapter 16: Pain, Temperature Regulation, Sleep, and Sensory Function

 

Complete Chapter Questions With Answers

 

Sample Questions Are Posted Below

 

MULTIPLE CHOICE

 

1. Pricking one’s finger with a needle would cause minimal pain, whereas experiencing abdominal surgery would produce more pain. This distinction is an example of which pain theory?

a.	Gate control theory	c.	Specificity theory
b.	Intensity theory	d.	Pattern theory

 

 

ANS:  C

According to the specificity theory, a direct relationship exists between the intensity of pain and the extent of tissue injury. The remaining options are not related to the intensity of perceived pain.

 

PTS:   1                    REF:   Page 485

 

2. Which pain theory proposes that a balance of impulses conducted from the spinal cord to the higher centers in the central nervous system (CNS) modulates the transmission of pain?

a.	GCT	c.	Specificity theory
b.	Pattern theory	d.	Neuromatrix theory

 

 

ANS:  A

Only the gate control theory (GCT) explains that a balance of impulses conducted to the spinal cord, where cells in the substantia gelatinosa function as a spinal gate, regulates pain transmission to higher centers in the CNS.

 

PTS:   1                    REF:   Page 485

 

3. Which type of nerve fibers transmits pain impulses?

a.	A-alpha (Aa) fibers	c.	A-delta (Ad) fibers
b.	A-beta (Ab) fibers	d.	B fibers

 

 

ANS:  C

Of the available options, only medium-sized Ad fibers transmit pain impulses.

 

PTS:   1                    REF:   Page 486

 

4. Where are the primary-order pain transmitting neurons located within the spinal cord?

a.	Lateral root ganglia	c.	Anterior root ganglia
b.	Dorsal root ganglia	d.	Medial root ganglia

 

 

ANS:  B

The cell bodies of the primary-order neurons, or pain-transmitting neurons, reside only in the dorsal root ganglia just lateral to the spine along the sensory pathways that penetrate the posterior part of the cord.

 

PTS:   1                    REF:   Page 487

 

5. The gate in the GCT of pain is located in the:

a.	Substantia gelatinosa	c.	Nucleus proprius
b.	Marginal layer	d.	Dorsolateral tract of Lissauer

 

 

ANS:  A

The synaptic connections between the cells of the primary- and secondary-order neurons located in the substantia gelatinosa and other Rexed laminae function as a pain gate. The remaining options do not act in this function.

 

PTS:     1          REF:    Page 487