Reflex Arc Quiz

What is the role of a Sensory Receptor in a reflex arc?

• It generates an electrical impulse upon detecting a stimulus.

• It processes the sensory information in the spinal cord or brain.

• It conducts impulses from the CNS to an effector organ.

• It is located in the dorsal root ganglion of the spinal cord.

Where is the cell body of the afferent neuron located in the reflex arc?

• In the effector organ

• In the integration centre

• In the dorsal root ganglion of the spinal cord

• In the sensory receptor

What is the function of the efferent neuron in the reflex arc?

• It detects the stimulus.

• It processes the sensory information.

• It conducts impulses from the CNS to an effector organ.

• It generates an electrical impulse.

What is the role of the effector in a reflex arc?

• It analyzes the stimulus and sends signals to the muscles or glands.

• It executes the response to the stimulus, such as muscle contraction or hormone secretion.

• It carries sensory information from the receptors to the spinal cord.

• It stores information about the stimulus for future reference.

What is the importance of spinal reflexes in maintaining posture and movement?

• They provide the brain with time to process sensory information.

• They are responsible for the voluntary control of movement.

• They help maintain muscle tone and support posture by instantly reacting to environmental changes.

• They store energy for movements that require increased strength.

What is the role of Cerebrocerebellum in movement? (input from cerebral cortex)

• Touch and pressure sensation during movement

• • Movement planning and initiation

• Balance and eye movement

What does the Vestibulocerebellum do in movement?

• Movement planning and initiation

• Touch and pressure sensation during movement

• • Balance and eye movement