2Good Morning…Bell Ringer #1:Reflect back over winter break.
3Bell Ringer #2 Review your notes from last class. Answer the following question using those notes:How did your nervous system help you conduct the activity you did in the computer lab (red light/green light activity)?Yes, this is the same question you answered for bell ringer number 1. Use what you learned last class to add to or change your answer from bell ringer #1.
4Bell Ringer #3For each profession, tell me if the individual would most likely be right-brained or left-brained.ArchitectWriter of Fiction BooksMathematicianArt TeacherEngineerMusicianLawyerScientist
5Bell Ringer 4 – Read the following passage… While lying in bed one night, John heard a barking noise that seemed to be coming from outside. He looked out the window and saw his yellow lab named Murphy had gotten loose! As he rushed down the stairs to fetch Murphy, John tripped and fell to the bottom of the stairs. He was in a great deal of pain! He then managed to make his way to the bathroom to take some pain relievers. John read the label on the bottle – he was to take 2 pills.
6Bell Ringer 4 con’t…After reading the story, explain how John may have used ALL 4 lobes of the cerebrum during this mishap! Use your notes!
7This is awesome! O lny srmat poelpe can raed tihs. I cdnuolt blveiee taht I cluod aulaclty uesdnatnrd waht I was rdanieg. The phaonmneal pweor of the hmuan mnid, aoccdrnig to a rscheearch at Cmabrigde Uinervtisy, it deosn't mttaer in waht oredr the ltteers in a wrod are, t he olny iprmoatnt tihng is taht the frist and lsat ltteer be in the rgh it pclae. The rset can be a taotl mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae the huamn mnid deos not raed ervey lteter by istlef, but the wrod as a wlohe. Amzanig huh? yaeh and I awlyas tghuhot slpeling was ipmorantt! if you can raed tihs psas it on !!"
9The Nervous System 1. Two main divisions a. Central Nervous System (CNS) – consists of brain and spinal cordb. Peripheral Nervous System (PNS) – includes nerves extending from brain and spinal cordc. The CNS receives messages from the PNS, interprets them, and then sends out a response.
11Neurons2. Neurons - nerve cells that transmit messages to and from the spinal cord and braina. Sensory Neurons – carry messages FROM body TO CNSex. Playing games in computer lab. When light switches to green, a sensory neuron transmits a message from your eye to your brain
12Neurons b. Motor Neurons – carry message TO body FROM CNS ex. Your brain sends a signal through a motor neuron to tell your finger to click the mouse.c. Interneurons – connect neurons
153. Structure and Functions of Neurons 1. Dendrites – receive information and transmit impulses toward cell body2. Cell Body – large area which contains cell nucleus or power plant3. Nucleus – command center of the neuron
164. Axon – transmit impulses away from cell body and toward axon terminal 5. Axon Terminals – branched structures at the ends of neurons.6. Myelin Sheath – insulating coat which covers the axon. This helps messages relay faster.
23The Central Nervous System 2. The Cerebruma. largest, most complex part of brainb. right and left sides communicate with each other to coordinate movement. Right controls left side and vice versa.c. left hemisphere is for more concrete thinkingd. right hemisphere is for abstract thinking
25The Central Nervous System 3. Four lobes (parts) of the cerebruma. Frontal Lobe –use of languageb. Parietal Lobe – sensory information, including feelings of heat, cold, pain, touchc. Occipital Lobe – Controls sense of sightd. Temporal – sense of hearing and smell
26Frontal Lobe Exercise: Unscramble the following words: LLBADLOFEREPONHPHELNATEICINMDEE
27Parietal Lobe Exercise: 1. Blow on your hand 2 Parietal Lobe Exercise: 1. Blow on your hand 2. Now, puff your breath on your hand
28Temporal Lobe Exercise: Whisper down the lane! Shhhh!
29Whisper… She sells seashells by the sea shore. Eleven owls licked eleven little liquorice lollipops."If two witches were watching two watches, which witch would watch which watch?“If you want to buy, buy, if you don't want to buy, bye bye!"
38The Central Nervous System 5. The Brain Stema. 3 inch long stalk of nerve cells that connect the spinal cord to the rest of the brain
39The Central Nervous System b. five parts1. Medulla Oblongata – regulates heartbeat, breathing rate2. Pons – controls muscles of eyes and face.3. Midbrain – controls pupil size4. Thalamus – relays incoming information from the eyes, ears, and pressure receptors in skin5. Hypothalamus – regulates body temp, appetite, sleep
494. Thalamus – relays incoming information from the eyes, ears, and pressure receptors in skin
50Activity 5Imagine you are stranded on a cold (20 degree) deserted island with no supplies, food, or shelter. You haven’t slept in two days, nor have you ate in two days. How would you be feeling???
515. Hypothalamus – regulates body temp, appetite, sleep
52The Peripheral System 1. Broken into two parts a. Autonomic Nervous System – controls involuntary functions such as digestion and heart rate- you cannot control this; it is automatic! (autonomic)b. Somatic Nervous System – voluntary responses that are under your control- feeling and itch on your skin and scratching it, or giving someone a high five
53The Peripheral System 2. Autonomic Nervous System a. Broken down into two smaller networksb. First part is the Sympathetic nervous systemWatch these clips…https://www.youtube.com/watch?v=J-qQbIiOtYMhttps://www.youtube.com/watch?v=-mUDknB2YWM
54Sympathetic Nervous System - kicks in when you are startled. Your heart rate increases. Also, blood vessels dilate to allow for greater blood flow.- “Fight or flight response”- Rush of adrenaline- Example… You pick! Write one down…
55So, how exactly does all this work? https://www.youtube.com/watch?v=jdJpLvSTZMU
56The Peripheral Systemc. The second part: Parasympathetic nervous system – opposite of sympathetic nervous system- slows heartbeat, relaxes blood vessels, lowers blood pressure
57Problems of the Nervous System 1. Headaches – caused by muscle tension, eyestrain, sinus infection, dehydration, or food allergies2. Head injuriesa. concussion – a temporary loss of consciousness
58Problems of the Nervous System 3. Spinal Injuriesa. swelling of spinal cord tissue can result in temporary loss of nerve functionb. if spinal cord is severed, you may become paralyzed.
59Problems of the Nervous System 4. Meningitis – inflammation of the spinal and cranial meninges caused by a virus or bacteriaa. symptoms include fever, headache, light and sound sensitivity, and neck stiffness.b. can result in death
60How to care for/prevent these problems: 1. Eat a well-balanced diet, exercise regularly, get lots of sleep!2. Wear protective devices – helmet, seat belt3. Stay away from drugs and alcohol!!!