1.40. Nervous System http://www.ck12.org
FIGURE 1.72
Staying balanced when riding a scooter requires control over the body’s
muscles. The nervous system controls the muscles and maintains
balance.Vocabulary
- endocrine system: System of glands that secrete hormones into the bloodstream.
- nerve: Bundle of nerve cells.
- nervous system: Body system that sends electrical messages throughout the body; controls all other body
systems. - organ system: Groups of organs that work together to perform a specific task.
Summary
- The nervous system sends electrical messages throughout the body and controls all other body systems.
- The nervous system allows you to think, learn, sense your surroundings, and control your internal body
systems.
Practice
Use the resource below to answer the questions that follow.
- Nervous Systemat http://www.getbodysmart.com/ap/nervoussystem/menu/menu.html
- What are the major organs of the nervous system?
- What does the somatic nervous system do? Why is a system like this useful to organisms?
- What does the autonomic nervous system do? How does it differ from the somatic nervous system?
Review
- What are some functions of the nervous system?
- What type of signals does the nervous system send?