Understanding Reflexes and Reflex Arcs

What is the role of the sensory neuron in a reflex arc?

• It detects external stimuli.

• It carries the impulse towards the spinal cord.

• It connects with motor neurons.

• It responds to the stimulus.

Which component of the reflex arc is responsible for carrying the impulse within the central nervous system?

• Motor neuron

• Intermediate neuron

• Sensory neuron

• Receptor

How do neurotransmitters move across the synaptic cleft?

• By electrical impulses

• Through a complex sequence

• By diffusion

• Via direct contact

What happens when you step on a sharp object?

• The effector detects the sharp object.

• The motor neuron in the leg pulls the foot away.

• The sensory neuron sends an impulse to the brain.

• The brain processes the pain first.

Which of the following is an example of a reflex action?

• Solving a math problem

• Writing an essay

• Breathing

• Reading a book