Front

What is the central nervous system?

Back

The central nervous system (CNS) is the control center of the body, consisting of the brain and spinal cord.

Front

What are reflex actions?

Back

Reflex actions are quick, involuntary responses to stimuli that help prevent injury and are essential for survival.

Front

What type of neurons carry messages to the central nervous system?

Back

Sensory neurons carry messages to the central nervous system.

Front

What is an involuntary action?

Back

An involuntary action is a movement that you cannot control, such as reflexes.

Front

What is a voluntary action?

Back

A voluntary action is a movement that you can control, such as deciding to move your arm.

Front

What is the role of motor neurons?

Back

Motor neurons carry messages from the central nervous system to muscles, enabling movement.

Front

What is the function of the brain?

Back

The brain processes information, controls thoughts, emotions, and coordinates actions.

Front

What is the function of the spinal cord?

Back

The spinal cord transmits messages between the brain and the rest of the body.

Front

What is a stimulus?

Back

A stimulus is any change in the environment that can provoke a response.

Front

What is a response?

Back

A response is the reaction of an organism to a stimulus.