Reflex Arc and Reflexes

Front

What is a reflex arc?

Back

A reflex arc is a neural pathway that controls a reflex action, involving sensory neurons, interneurons, and motor neurons.

Front

What role do interneurons play in a reflex arc?

Back

Interneurons connect sensory neurons to motor neurons within the spinal cord.

Front

What is the function of sensory neurons in a reflex arc?

Back

Sensory neurons transmit signals from receptors to the spinal cord.

Front

What is the role of motor neurons in a reflex arc?

Back

Motor neurons carry signals from the spinal cord to muscles to elicit a response.

Front

What are receptors in the context of a reflex arc?

Back

Receptors are specialized cells that detect stimuli and initiate the reflex response.

Front

Define stimulus in relation to reflexes.

Back

A stimulus is any change in the environment that can be detected by receptors.

Front

What is the significance of the spinal cord in a reflex arc?

Back

The spinal cord processes the information from sensory neurons and coordinates the response through motor neurons.

Front

Explain the term 'involuntary' in the context of reflex actions.

Back

Involuntary means that reflex actions occur automatically without conscious thought.

Front

What is the difference between a reflex and a voluntary action?

Back

A reflex is an automatic response to a stimulus, while a voluntary action is a conscious decision to respond.

Front

How do reflexes protect the body?

Back

Reflexes provide a quick response to harmful stimuli, helping to prevent injury.