Nervous System Whole Group

Nervous System

The body system responsible for sending messages and signals throughout the body.

Parts of the Nervous System

Your nervous system is made up of your brain, spinal cord, and nerves.

Two Divisions of the Nervous System

• The central nervous system (CNS) contains your brain and spine.

• The peripheral nervous system (PNS) contains the nerves that run throughout your body (feet, legs, etc.) that all branch from the CNS

Your nervous system is split into 2 major parts

• Central Nervous System

• Peripheral Nervous System

Nervous System Functions

Your brain is the processing and control unit for your body. It is responsible for sending and receiving signals in the body, interpreting information about the environment around you, and responding to information as it comes.

Multiple Choice

The nervous system is made up of all the following EXCEPT

• Brain

• Nerves

• Muscles

• Spinal Cord

Brain Cells (Neurons)

Neurons are the cells that make up most of your brain and nervous system. They have a very special job, and are designed to work in a very specific way. Each Neuron has lots of little arms (dendrites) that receive messages from other neurons' axon and nerve endings (tail). This allows the nerve cells to quickly pass signals throughout your body.

Fight or Flight?

Have your ever been really scared? Think of walking through a haunted house... Did you feel anxious? Scared? Was your heart beating faster than normal? Were you more aware of things happening around you? This is your nervous system in "fight or flight" mode.

Fight or Flight

When you're scared, your nervous system goes into its' Fight or flight mode, which is designed to prepare your body to either fight, or run (flight). Your heart rate increases, you might start sweating, you're more aware of things happening around you, you feel anxious, and your mind starts racing. Your body is preparing itself for a fight or a flight.

Multiple Select

The nervous system is broken into 2 major parts, the

• Central Nervous System

• Pedestrian Nervous System

• Peripheral Nervous System

• Whole Nervous System

Multiple Choice

When you smash your finger, it takes your brain a ________ time to process the pain signal and tell your hand to move.

• long

• very long

• Short

• very short

They ALL work TOGETHER!!!

All of your body systems work together and are interconnected! Your nervous system is in charge, and helps tell all of the other systems what to do!

Multiple Choice

When you want to go for a run, your nervous system tells your ________ system what to do.

• Respiratory

• Digestive

• Skeletal

• Muscular

Multiple Choice

When you need to use the bathroom, your excretory (the system that makes you need to go pee) system sends a signal to your ________ system to let your body know that it's time....

• Skeletal

• Nervous

• Circulatory

• Respiratory

Multiple Select

Stand up, run in place for 30 seconds (actually do it!). What body systems were involved in the exercise you just did? (check all that apply)

• Nervous system

• Respiratory system

• Circulatory System

• Muscular system

• Skeletal system

Multiple Select

In what way did your nervous system help when you ran in place for 30 seconds? (check all that apply)

• Your nervous system told your muscles what to do (contract and relax)

• your nervous system told your circulatory systemto pump faster because your muscles needed more oxygen

• your nervous system told your respiratory system to breather faster to get more oxygen in quicker

• your nervous system told your digestive system to pause on digesting food because it needed more blood to transport the oxygen your muscles need

• your nervous system told itself to start making sweat to help cool your body down

Multiple Choice

When your get scared, your nervous system goes into

• walk and talk mode

• fight or flight mode

• sit and lounge mode

• chill mode

Multiple Choice

What does the nervous system do?

• Pumps blood from your heart to your body

• Breaks up food

• Carries messages back and forth between your brand and the rest of your body

• secretes hormones