Chapter 6 Self-test questions

* not completed

. Which of the following statements about proprioceptors is not correct?

Proprioceptors are receptors that provide information about mechanical forces arising from the body itself. correct incorrect

Proprioceptors include muscle spindles and joint receptors that deliver to the central nervous system sensory information essential for the accurate execution of movements. correct incorrect

Proprioceptors are complex neural structures that integrate sensory information and motor output commands. correct incorrect

Proprioceptors are involved in the neural control of stepping movements of limbs by half-centers in the spinal cord. correct incorrect

* not completed

. Which of the following statements about central pattern generators is correct?

The activity of central pattern generators is controlled by input from higher brain centers. As a consequence, their physiological activity cannot be studied after their isolation. correct incorrect

Central pattern generators have an intrinsic ability to generate a rhythmic output pattern. correct incorrect

The output pattern of central pattern generators is only determined by the autonomous activity of their neurons. correct incorrect

For the production of a rhythmic pattern by central pattern generator it is necessary that the underlying neural circuitry is intact. correct incorrect

* not completed

. Which of the following are characteristic features of half-centers in the spinal cord that control the stepping movements of limbs? Please select all that apply.

Neurons within half-centers are capable of producing spontaneous neural activity. correct incorrect

Half-centers are symmetric assemblies of neurons that inhibit each other reciprocally. correct incorrect

The contractions of extensor and flexor muscles are controlled by opposing half-centers. correct incorrect

Neurons of opposing half-centers are activated simultaneously. correct incorrect

* not completed

. Which of the following statements is not correct?

Fictive behaviors can be observed in animals after administration of general anesthetics. correct incorrect

Fictive behaviors can be observed in animals after blocking synaptic transmission at the neuromuscular junction. correct incorrect

Fictive behaviors are sequences of motoneuron activity occurring without the production of actual movement. correct incorrect

Fictive behaviors can be monitored through extracellular and intracellular recordings from motoneurons. correct incorrect

* not completed

. Rebound firing involves production of action potential(s) by a neuron after it has been hyperpolarized.

True correct incorrect

False correct incorrect