1. Where would the cell body of a sensory neuron that transmits touch information from
the cheek to the central nervous system be located?
a. Ganglion
... [Show More] alongside the brainstem
b. Nucleus inside the brainstem
c. Ganglion alongside the spinal cord
d. Nucleus inside the spinal cord
e. Ganglion immediately underneath the skin of the cheek
Answer: a
Textbook Reference: Afferent Fibers Convey Somatosensory Information to the Central
Nervous System
2. Which feature is characteristic of the pseudounipolar neurons of the somatosensory
system?
a. Central and peripheral components of the fibers are of a similar length
b. Thick fibers that enables fast signal transduction
c. Fibers with particularly high myelin content
d. Continuous fibers, with the cell body attached by a single process
e. Multiple dendrites
Answer: d
Textbook Reference: Afferent Fibers Convey Somatosensory Information to the Central
Nervous System
3. Afferent fibers that lack specialized receptors at their terminals detect which type of
stimuli?
a. Touch
b. Vibration
c. Pressure
d. Pain
e. Itch
Answer: d
Textbook Reference: Afferent Fibers Convey Somatosensory Information to the Central
Nervous System
4. Which afferent fibers have the largest diameter?
a. Ia sensory afferents from the muscles
b. Ia sensory afferents from the skin
c. Aβ sensory afferents from the skin
d. A and C fibers that conduct temperature information
e. A and C fibers that conduct pain information
Answer: a
Textbook Reference: Somatosensory Afferents Convey Different Functional Information
5. The _______ is inversely proportional to the density of the fibers supplying an area.
a. diameter of the afferent fiber
b. size of the receptive field
c. speed of conduction
d. average stimulus strength
e. distance between an area and the central nervous system
Answer: b
Textbook Reference: Somatosensory Afferents Convey Different Functional Information
6. On which body part would the two-point discrimination threshold be shortest?
a. Thigh
b. Foot
c. Arm
d. Thumb
e. Ear
Answer: d
Textbook Reference: Somatosensory Afferents Convey Different Functional Information
7. Rapidly adapting fibers are most likely to provide information about the _______ of a
stimulus.
a. shape
b. weight
c. texture
d. movement
e. temperature
Answer: d
Textbook Reference: Somatosensory Afferents Convey Different Functional Information [Show Less]