Nervous System Study Guide

Front

What is the purpose of the nervous system?

Back

responsible for controlling and coordinating the activities of the body. It helps you think, feel, move, and react to your surroundings.

Front

What are the parts of the Central Nervous System (CNS)?

Back

includes the brain and spinal cord. It processes information and controls most functions of the body.

Front

sensory neurons

Back

carry information from sensory receptors (like eyes, skin, and ears) to the brain and spinal cord.

Front

motor neurons

Back

send messages from the brain and spinal cord to muscles or glands to produce a response.

Front

interneurons

Back

found in the brain and spinal cord. They connect sensory and motor neurons, processing information and helping with decision-making.

Front

What is a reflex?

Back

an automatic, quick reaction to a stimulus that doesn’t involve the brain, such as pulling your hand away from something hot.

Front

What is a response?

Back

a more thoughtful reaction that requires the brain to process information, like deciding to touch a pencil after seeing it on your desk.

Front

What is a stimulus?

Back

anything that triggers a response in the nervous system, such as light, sound, heat, or touch.

Front

How do the eyes contribute to the 5 senses?

Back

detect light and send information to the brain about what we see.

Front

How do the ears contribute to the 5 senses?

Back

detect sound waves and send signals to the brain about what we hear.