Chapter Twelve The Somatic Sensory System
1. Identify a type of hairless skin. Choose the correct option.
A) Glabrous
B) Epidermis
C) Dermis
D) Follicles
2. Which of the following has large receptive fields that may cover an entire finger or
half of the palm? Choose the correct option.
A) Merkel's disks
B) Pacinian corpuscles
C) Meissner's corpuscles
D) Krause end bulbs
3. What are mechanoreceptors? Choose the correct option.
A) Sensitive to high-frequency vibrations
B) Sensitive to smooth, mechanical surfaces
C) Sensitive to physical distortion
D) Sensitive to temperature changes
4. What is meant by the notion "the output of the cortex can influence the input of
the cortex"? Choose the correct option.
A) Neurons of the thalamus and dorsal column are also controlled by cortical input.
B) Information is transferred unchanged through the brain stem and the thalamus.
C) Information synapses at the thalamus before proceeding to the neocortex.
D) Somatic sensory system of one side of the brain is related to the other side of
the body.
5. What is two-point discrimination? Choose the correct option.
A) The average distance between two points that can be differentiated by the somatic
sensory system
B) The greatest distance between two points that can be differentiated by the somatic
sensory system
C) The smallest distance between two points that can be differentiated by the somatic
sensory system
D) The distance between two points that cannot be differentiated by the somatic
sensory system
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1. Identify a type of hairless skin. Choose the correct option.
A) Glabrous
B) Epidermis
C) Dermis
D) Follicles
2. Which of the following has large receptive fields that may cover an entire finger or
half of the palm? Choose the correct option.
A) Merkel's disks
B) Pacinian corpuscles
C) Meissner's corpuscles
D) Krause end bulbs
3. What are mechanoreceptors? Choose the correct option.
A) Sensitive to high-frequency vibrations
B) Sensitive to smooth, mechanical surfaces
C) Sensitive to physical distortion
D) Sensitive to temperature changes
4. What is meant by the notion "the output of the cortex can influence the input of
the cortex"? Choose the correct option.
A) Neurons of the thalamus and dorsal column are also controlled by cortical input.
B) Information is transferred unchanged through the brain stem and the thalamus.
C) Information synapses at the thalamus before proceeding to the neocortex.
D) Somatic sensory system of one side of the brain is related to the other side of
the body.
5. What is two-point discrimination? Choose the correct option.
A) The average distance between two points that can be differentiated by the somatic
sensory system
B) The greatest distance between two points that can be differentiated by the somatic
sensory system
C) The smallest distance between two points that can be differentiated by the somatic
sensory system
D) The distance between two points that cannot be differentiated by the somatic
sensory system
, Page 1
