The Nervous System
Grade 7 · Science · Cells and Body Systems · British Columbia, Canada
Lesson Summary
Explore how the brain, spinal cord, and nerves control your body and respond to the environment.
Explanation
The nervous system is your body's communication network. It is divided into the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves throughout the body). Nerve cells called neurons send electrical signals to relay information. Sensory neurons carry signals from your senses to the brain, the brain processes the information, and motor neurons carry instructions back to muscles or organs. Reflexes are automatic responses that happen so fast they bypass the brain temporarily.
Practice Questions
Q1: What is the difference between the central and peripheral nervous systems?
Answer: The central nervous system includes the brain and spinal cord, while the peripheral nervous system includes all the nerves that branch out to the rest of the body.
Q2: What is a reflex and why is it important?
Answer: A reflex is an automatic, rapid response to a stimulus (like pulling your hand from a hot stove). It protects you from harm by reacting before the brain fully processes the signal.
Q3: What type of neuron carries signals from your eyes to your brain?
Answer: Sensory neurons carry signals from sense organs like the eyes to the brain for processing.
People Also Ask
What is The Nervous System in Grade 7 Science?+
The Nervous System is a lesson in the Cells and Body Systems chapter of Grade 7 Science. It is part of the British Columbia, Canada school curriculum and covers key concepts that students need to understand at this level.
What grade level covers The Nervous System?+
The Nervous System is taught in Grade 7 as part of the Science curriculum in British Columbia, Canada.
How can I help my child with Cells and Body Systems in Science?+
Start with the lesson summary and explanation on this page. Practice the questions provided, then use TutorTom for personalized, step-by-step help with Cells and Body Systems topics.