The information and control system Brain song The Nervous System The information and control system Brain song

Do Now: Can you make the bulb light up? Draw it in your Nervous system packet p 2.

What does the bulb need in order to light up? How is this similar to your nervous system?

Your body is like the light bulb: it needs a completed circle to work. Bounce the ball to each other. What does your body need to do to catch it?

Functions or Jobs of the Nervous System Receive Information 2. Respond to information 3. Maintain homeostasis School house rock http://www.brainpop.com/health/bodysystems/nervoussystem/ http://kidshealth.org

Receive Information You use your senses (which are part of the nervous system) to know what is going on outside you. Your body also uses the nervous system to tell what is going on inside.

Respond to information Any change or signal that makes an organism react is a stimulus A response is what you do in reaction to a stimulus

Maintain Homeostasis Respond to internal (inside your body) or external (outside your body) stimulus I’m hungry

DO NOW: Complete the table below by identifying the human organ system that performs each function listed. On your packet p.2 just number 1-4 and write your answer. Function Body system controls and coordinates the body’s responses using electrical signals  1.  supplies oxygen to blood cells  2. turns large food molecules into smaller food molecules    3. carries nutrients to the body cells  4.

Stimulus: any change in the environment that makes an organism react   Response: an organism’s reaction to a stimulus

Parts of the Nervous System Your system is made up of 1. The brain 2. The nerve cells called neurons 3. The spinal cord

What does it feel like when you’re scared?   What do you think the reason is for the feeling of being scared? In other words, why does your body make you feel that way? ( Remember, your body doesn’t do anything by accident.)

Neurons Cells that carry information through your nervous system Brainpop - neurons

One Nerve Cell Synapse Axon Axon tips Cell Body Impulses Dendrites

Nerve to nerve

Three Kinds of Neurons Sensory neuron – picks up stimuli and changes it into a nerve impulse Interneuron – passes the impulse from neuron to neuron Motor neuron – send nerve impulse to muscle, causing muscle to contract

Fire Heat stimulus

Do Now: Draw how the nerve signal passes through your body. Include a stimulus and response.

Do Now: INB p 65 How could you measure how fast a nerve impulse moves through your body? Describe how on p 65. Then read Impulse Speed lab p 66-68

Divisions of the Nervous system Central nervous system Peripheral Nervous system

Central Nervous system Brain Spinal Cord

Brain Why is it so wrinkly? Think about other parts of your body that have a lot of folds like that? (for example: your alveoli, your small intestine) https://giphy.com/gifs/uofcalifornia-brain-concussion-concussions-l41lWsVL8GSTY8xTa

Brain Three Parts of Brain Cerebrum - Senses, thinking, movement, learning Cerebellum – Coordination and balance Brain stem – involuntary actions (breathing, heartrate) http://www.brainpop.com/health/bodysystems/brain/ Pinky and the brain song

Do Now 1. Have your partner sit on the desk with legs dangling. 2. Sharply tap the patellar tendon of the crossed leg, right under the kneecap, with the side of your hand and note the response. Compare responses in the right and left knees. 3. Repeat step one, but have your partner perform Jendrassik’s maneuver: a. clasp his or her hands at chest level in front of your body with your fingers locked b. have him or her try to vigorously to pull the hands apart while you tap the patellar tendon as before.

Reflex or Deliberate Action Response occurs without thought or concentration Examples: pupil size Knee jerk Blinking when something comes at your face Response requires thought or learning Controlled by the cerebrum Choose to respond or act Ex. Reading colors

The Senses Do Now: Discuss at your table and be prepared to share. What would happen if your nose was upside down? Why do you have two eyes instead of one? Why is your mouth in the front of your head? Why are many of your senses located together? Discuss at the table and think what could problems you could have.

Parts of brain song - it is on utube so is blocked from the schools site but you can copy and paste at home. http://educationalminimovies.com/index.php?option=com_content&view=article&id=657:parts-of-the-brain-song&catid=335&Itemid=55 Check out www.quizlet for vocab, search Levin Games http://www.bbc.co.uk/science/humanbody/body/interactives/3djigsaw_02/index.shtml?skeleton