Reflex Arcs

What is defined as anything that evokes a response?

• A receptor

• A neuron

• A stimulus

• Transduction

What is the primary function of receptors in the body?

• To send signals away from the brain

• To detect changes in the outside world

• To convert electrical signals into physical movement

• To store memories

What process involves converting a stimulus message into electrical signals that the brain can understand?

• Reflex action

• Myelination

• Transduction

• Synaptic transmission

Which type of neuron carries information from receptors towards the central nervous system?

• Motor neuron

• Interneuron

• Sensory neuron

• Efferent neuron

What is the function of the dorsal root in a reflex arc?

• Transmitting motor signals away from the spinal cord.

• Carrying sensory information into the spinal cord.

• Connecting interneurons to motor neurons.

• Initiating muscle contraction.

What is the primary role of an interneuron in a reflex arc?

• To directly stimulate muscle contraction.

• To transmit sensory information to the brain for conscious processing.

• To connect sensory neurons with motor neurons for a rapid response.

• To convert stimuli into electrical signals.

In a reflex arc, in which direction does the motor neuron transmit signals relative to the brain?

• Towards the brain.

• Away from the brain.

• Both towards and away from the brain.

• It does not transmit signals related to the brain.

Which of the following best describes an effector in the context of a reflex arc?

• A specialized cell that detects stimuli.

• A neuron that carries signals towards the central nervous system.

• A muscle or gland that responds to a motor signal.

• The part of the spinal cord where decisions are made.