Reflex arc

Front

What is a reflex arc?

Back

A reflex arc is a neural pathway that controls a reflex action, consisting of a sensory receptor, sensory neuron, interneuron, motor neuron, and effector.

Front

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

Back

The sensory neuron transmits sensory information from the sensory receptor to the central nervous system.

Front

What is the function of the interneuron in a reflex arc?

Back

The interneuron facilitates communication between sensory and motor neurons, processing the sensory input and directing the appropriate response.

Front

What is an effector in the context of a reflex arc?

Back

An effector is a muscle or gland that carries out the response to a stimulus in a reflex arc.

Front

Define involuntary reflexes.

Back

Involuntary reflexes are rapid, automatic responses to stimuli that occur without conscious thought.

Front

What is the integration center in a reflex arc?

Back

The integration center, typically an interneuron, processes sensory input and determines the appropriate motor response.

Front

How do reflexes differ from voluntary actions?

Back

Reflexes are automatic and do not require conscious thought, while voluntary actions are controlled by the brain and require conscious effort.

Front

What is the pathway of a reflex arc?

Back

The pathway of a reflex arc typically follows this sequence: sensory receptor -> sensory neuron -> interneuron -> motor neuron -> effector.

Front

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

Back

Sensory receptors detect stimuli from the environment and convert them into electrical signals for the sensory neurons.

Front

Explain the term 'motor neuron' in a reflex arc.

Back

A motor neuron transmits signals from the central nervous system to the effector, causing a response.