 Explain and discuss what the nervous system  Discuss the functions and diseases/problems the nervous system can bring  Show and explain a model of the system  Questions for us from the class  quiz/worksheet

 The nervous system is a collection of nerves and specialized cells known as neurons that send signals between different parts of the body

 Body’s essential wiring  Bundles of fibers start at the brain and central chord and branch out to every part of the body  Contains two parts: central and peripheral  Made up of neurons and glial cells

 Encased in bone and controls the sensory and helps with responding  Consists of spinal chord and brain which lies in cerebrospinal fluid (a colorless fluid produced in the brain)  Has two types of tissues which are gray matter and white matter › Gray matter: nerve cell bodies, dendrites, and axons › White matter: axons which cause it to be white

 Consists of sensory neurons and motor neurons  Sensory neurons tells the central nervous system about stimuli; has 12 pairs of cranial nerves and 31 pairs of spinal nerves  Motor neurons take action and are connected to the central nervous system that goes to the muscles and gland

 Sensory neurons and motor neurons run from the middle of the central nervous system and some organs such as the heart, lungs,viscera, and glands  Monitors the internal environment and the motor neurons controls the contraction of smooth muscle and cardiac muscle

 Medulla : part of the brain that controls heart beat and breathing rate.  Cerebellum : part of the brain that controls balance and body motion.  Cerebrum : large part of the brain that controls the senses and thinking  Axon: Fiber that carries messages away from the nerve cell  Dendrite : fiber that carries messages from other neurons to the nerve cell body

 Neuron : nerve cell  Relay Neurons: sensory neurons or motor neurons that carry messages  Brain: controls all functions of the body. › Located in the skull.  Spinal cord: sends messages from the brain to the parts of the body. › Located in your back.

 Seeing  Hearing  Taste  Touch  Smell  Video at the end

 Cerebrovascular accident (CVA) (stroke resulting in the brain losing oxygen which can cause loss of vision or speech)  Aphasia (involves any traumatic injury to the left side of your brain resulting in speech loss)  Epilepsy (a Greek word for seizure, and this only occurs for certain seizures lasting a long time and are more severe)

 Multiple Sclerosis (is in the central nervous system and is multiple degenerations of the insulating layer of the nerve fibers)  Transient Ischemic Attack (TIA) (a loss of blood flow in the brain for a short period of time)  Alzheimer's disease › Affects the memory, thinking, And behavior TIA Aphasia

 Brain scan (placing a radioactive substance in the blood can image possible features like tumors)  Lumbar (spinal) puncture or tap (LP) (injecting a needle in your lower spinal column which then allows you to sample fluids surrounding the brain and spinal chord)  Electroencephalography (EEG) (images the brains electrical activity)

 Computed tomography (CT) (x-ray machine taking multiple images with a better resolution than a normal x-ray does)  Magnetic Resonance Imaging (MRI) (shows a high resolution of soft tissue and does not involve an x-ray)

 Permanent brain damage can be caused by a lack of oxygen in the brain within 5 to 10 minutes.  Until your late 40’s, your brain keeps developing.  New brain connections are created every time you form a memory.  20% of your oxygen and blood in your body is used by your brain.  By the time you wake up, your brain has enough energy to power a small light bulb.  There are taste receptions in your brain.  The pathologist who performed Einstein’s autopsy kept his brain in a jar for 20 years.

 Your brain is composed of 60% fat.  Scientists say that when you diet, your brain eats itself.  The human brain has the same consistency as tofu.  Sponges have no nervous system.  The nervous system can transmit signals at 100 meters per second.  Neurons and glial cells make up the nervous system.  There are millions of nerve cells in your body.

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 "Quizlet." ALL Nervous System terms! flashcards. N.p., n.d. Web. 10 Mar "Quizlet." ALL Nervous System terms! flashcards. N.p., n.d. Web. 10 Mar < flash-cards/>.  "mad funny vid of Nervous System." YouTube. YouTube, 2 June Web. 10 Mar "mad funny vid of Nervous System." YouTube. YouTube, 2 June Web. 10 Mar  "Nervous System Diseases - Des Moines University." Des Moines University Nervous System Diseases Comments. N.p., n.d. Web. 02 Mar  "22 facts.com." 22Facts.com. N.p., n.d. Web. 10 Mar "22 facts.com." 22Facts.com. N.p., n.d. Web. 10 Mar  "Brain Facts: 13 Facts about Brain you didn't know ←FACTSlides→." Brain Facts: 13 Facts about Brain you didn't know ←FACTSlides→. N.p., n.d. Web. 10 Mar "Brain Facts: 13 Facts about Brain you didn't know ←FACTSlides→." Brain Facts: 13 Facts about Brain you didn't know ←FACTSlides→. N.p., n.d. Web. 10 Mar  "Nervous System Diseases - Des Moines University." Des Moines University Nervous System Diseases Comments. N.p., n.d. Web. 02 Mar