Question 1

Which of the following best describes the primary role of the peripheral nervous system (PNS) in sensation?

Accepted Answer

Transmitting sensory stimuli from receptors to the central nervous system

Question 2

Where are first-order neurons in a sensory pathway typically located?

Accepted Answer

In the dorsal root ganglia or cranial nerve ganglia

Question 3

A patient suffers damage to the thalamus. Which order of sensory neuron is most likely to be directly affected?

Accepted Answer

Third-order neuron

Question 4

Which of the following sequences correctly represents the flow of sensory information from the periphery to the brain?

Accepted Answer

First-order neuron → Second-order neuron → Third-order neuron

Question 5

Which function is primarily associated with second-order neurons in a sensory pathway?

Accepted Answer

Relaying sensory information from the spinal cord or brainstem to the thalamus

Question 6

A person touches a hot surface. Which nervous system is responsible for transmitting the initial pain signal to the spinal cord?

Accepted Answer

Peripheral nervous system

Question 7

Which of the following best describes the role of the central nervous system (CNS) in processing sensory stimuli?

Accepted Answer

Interpreting and integrating sensory information for perception

Question 8

If a lesion disrupts the pathway between the thalamus and the cerebral cortex, which order of neuron is most likely affected?

Accepted Answer

Third-order neuron

Question 9

Which of the following is a correct description of the function of third-order neurons in a sensory pathway?

Accepted Answer

Transmit sensory information from the thalamus to the cerebral cortex

Question 10

A patient has a spinal cord injury that interrupts the transmission of sensory information to the brain. Which neuron is most likely affected?

Accepted Answer

Second-order neuron

Question 11

Which of the following best explains why damage to the peripheral nervous system can result in loss of sensation?

Accepted Answer

The PNS transmits sensory signals from receptors to the CNS

Question 12

Which of the following is the correct order of events in the sensory pathway?

Accepted Answer

Stimulus detection → First-order neuron activation → Second-order neuron activation → Third-order neuron activation → Perception

Sensation: Role of the CNS in Sensory Processing

Study Guide - Practice Questions