The Nervous System FunctionsPartsReflexActivity At this station you will: -Learn the 3 main functions of the Nervous System -Learn the main parts of the nervous system -Determine how a reflex works -Do an activity to measure your reaction rate

Functions of the Nervous System 1.Receives Information- 2.Responds Information – 3.Maintains Homeostasis – Back to the Beginning PartsReflexActivity

Parts of the Nervous System Include information on this slide about : Neurons Nerve Impulse Central Nervous System Brain Spinal Cord Peripheral Nervous System Back to the Beginning FunctionsReflexActivity

Reflex Reflex Information Back to the Beginning FunctionsPartsActivity

Activity #1 – How fast can you react? Partner #1 stands with his/her forearm on the table with only the hand hanging off the side with thumb and index finger ready to pinch the meter stick. Partner #2 holds the meter stick where the bottom of the ruler (0 cm) is even with the first person’s fingers. Partner #2 drops the meter stick without warning and Partner #1 tries to catch it as quickly as possible. Record the distance the ruler dropped on your paper to the nearest centimeter. Repeat 3 times for each partner for each hand. Find the average. Back to the Beginning FunctionsPartsReflexNext Activity

Activity #2: Can You Keep From Reacting? Can you make yourself not blink? To answer this question, try the following activity. –Put on safety goggles. –Have your partner stand across from you and gently toss a cotton ball toward your goggles 10 times. Your partner should not give you any warning before tossing the cotton balls. –Count the number of times you blink and the number of times you are able to keep from blinking. Interpreting Data Compare the two numbers. Why is blinking considered a reflex? ReflexPartsFunctions Back to the Beginning Activity #1 Finish

Clean Up the Station Reset the station’s supplies. Go back to the first slide so the next group can begin. Back to the Beginning FunctionsPartsReflexActivity