Download presentation
Presentation is loading. Please wait.
Published byGerald Morris Modified over 8 years ago
2
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
3
The nervous system is a collection of nerves and specialized cells known as neurons that send signals between different parts of the body
4
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
5
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
6
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
7
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
8
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
9
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.
10
Seeing Hearing Taste Touch Smell Video at the end
11
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)
12
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
13
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)
14
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)
15
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.
16
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.
17
http://www.youtube.com/watch?v=jl0vU 6j6Www http://www.youtube.com/watch?v=jl0vU 6j6Www
18
"Quizlet." ALL Nervous System terms! flashcards. N.p., n.d. Web. 10 Mar. 2014.. "Quizlet." ALL Nervous System terms! flashcards. N.p., n.d. Web. 10 Mar. 2014. <http://quizlet.com/673149/all-nervous-system-terms- flash-cards/>. "mad funny vid of Nervous System." YouTube. YouTube, 2 June 2008. Web. 10 Mar. 2014.. "mad funny vid of Nervous System." YouTube. YouTube, 2 June 2008. Web. 10 Mar. 2014.. "Nervous System Diseases - Des Moines University." Des Moines University Nervous System Diseases Comments. N.p., n.d. Web. 02 Mar. 2014. "22 facts.com." 22Facts.com. N.p., n.d. Web. 10 Mar. 2014.. "22 facts.com." 22Facts.com. N.p., n.d. Web. 10 Mar. 2014.. "Brain Facts: 13 Facts about Brain you didn't know âFACTSlidesâ." Brain Facts: 13 Facts about Brain you didn't know âFACTSlidesâ. N.p., n.d. Web. 10 Mar. 2014.. "Brain Facts: 13 Facts about Brain you didn't know âFACTSlidesâ." Brain Facts: 13 Facts about Brain you didn't know âFACTSlidesâ. N.p., n.d. Web. 10 Mar. 2014.. "Nervous System Diseases - Des Moines University." Des Moines University Nervous System Diseases Comments. N.p., n.d. Web. 02 Mar. 2014.
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.