Lauren+C.

Sleep affects how we get through the day, whether we’re focused and alert or in and out of lala land. Nerve signalling chemicals called neurotransmitters control whether we are asleep or awake by acting on different groups of nerve cells in the brain. When we are asleep our bodies usually pass through five different stages until they get to REM (rapid eye movement). These stages are repeated in a cycle throughout the night.
 * Understanding Sleep**

1) The first phase of sleep we fall into is a light sleep, we drift in and out of consciousness and can be awaked easily. Usually awoken by sudden muscle contractions called hyping myoclonia. 2) The second stage is where our eye movements stop and our brain waves become slower with some rapid bursts of waves called spindles. 3) In the third phase of sleep the brain waves that are produced are extremely slow called delta waves. 4) Stage four is what we call a “deep sleep. There is no eye movement or muscle activity and your are less likely to be woken up. REM) When the sleep cycle hits the REM phase our limbs become numb, our breathing becomes more rapid. When people are woken up during this stage they most often describe odd dreams that they can vaguely remember. The REM stages is quite short while the “Deep Sleep” stage is the longest stage in the cycle.
 * Five stages Of Sleep **

** How much sleep do we need? ** How much sleep and how much we get depend on a variety of things but most of all our age. Infants usually needs about 16-17 hours of sleep, when teenagers on average should have about 9 hours. When it comes to adults 7-8 hours of sleep is a ideal nights worth. During the first few months of pregnancy woman should be getting 7 more hours of sleep than a usual nights rest. As you reach the older ages you tend to sleep more lightly and for a shorter amount of time even though they usually need the same amount of sleep as they did in there early adulthood period.

** Why we need sleep ** Many research has been made on why we need sleep and many scientist still don’t understand or have the answers to what seems to be the profound question. Many believe that it enables our bodie and allows our brain to recover from a long day at work or school. During the day brain cells build connections with other parts of the brain, while we are asleep important connections are strengthened and unimportant are disregarded. Lack of sleep changes the way our genes in the bodies cells behave, Researchers have found that genes involved in inflammation seem to increase their activity, some believe genes are responding to lack of sleep as if the body is under stress.

** Taking A Further Look: **

** Youtube Video ** media type="youtube" key="0o2yyO0JAes" width="560" height="315"

** Recommended Reads ** https://hbr.org/2006/10/sleep-deficit-the-performance-killer

http://discovermagazine.com/2014/jan-feb/70-erasing-fears-with-sleep

http://news.nationalgeographic.com/news/2003/11/1112_031112_tvbirdnaps.html

http://www.slate.com/articles/news_and_politics/explainer/2011/03/do_teens_really_need_nine_hours_of_sleep.html


 * Work Cited: **

http://www.ninds.nih.gov/disorders/brain_basics/understanding_sleep.htm

http://www.bbc.com/news/science-environment-32606341

https://www.youtube.com/watch?v=0o2yyO0JAes

https://sleepfoundation.org/excessivesleepiness/how-sleep-works/how-much-sleep-do-we-really-need

https://healthpromotion.caltech.edu/wellness/sleep

http://www.parenthaven.com.au/category/parenting/

http://weheartit.com/entry/group/28107186

Evolution Of Labradors ====yellow labs are a class of sporting dogs, they are known for their name retrieving game for there hunters oncedown. They have become one of the favourite family pets due to its wonderful personality, gentleness and loyalty. they were recognized in Englan as a kennel club breed in 1903. they were originally called a St.John’s dog or Newfoundland dog. Labradors come in three colors yellow,black and brown. ====

Three variations of Retrievers ==== Labs come in three different colours, black is the most well known and is dominant of its kind it was the colour commonly preferred and bred up until more recent times. The remaining two colours yellow and chocolate are known as the original colours for the breed. they are recessive genes and pups would of the two colours would occasionally pop up in litters. During the earlier breeding years these “off colours” were often culled until they were finally accepted in the American Kennel Clubs and registered. ====

Health Complications ==== Orthopaedic problems are very common with Labradors suffering high rates of joint dysplasia commonly found in their hips and elbows. between 1974-2005 X-rays were taken of 176,000 labs and find 12 dysplastic and 11.5% were found dysplastic in their elbows when X-rayed again. Eye diseases are common as well some diseases leading to blindness in labs from 4-8 years old. Most health problems found in Labradors are genetic being passed on from their parents. ====

Working Dogs ==== labs intelligent mind is used for great things they are commonly used for hunting,tracking and therapy work or even disabled assistance. close to 70% of guide dogs in Canada are labradors, they are powerful swimmers noted for their ability to tolerate the coldest water for extended periods of time which is what makes them one of the most commonly used dogs for hunting. This is also makes popular in water rescue situations. ====

Taking A Further Look

Youtube Video media type="youtube" key="0cj81wHmfXc" width="560" height="315"

Recommended Reads http://discovermagazine.com/1994/oct/ascentofthedog434 http://news.nationalgeographic.com/news/2014/05/140523-dogs-war-canines-handler-military-marine-labrador-afghanistan-family-mourn/ http://www.slate.com/blogs/future_tense/2013/09/06/auburn_auto_dog_system_can_control_working_canines_but_it_s_not_creepy.html http://www.slate.com/articles/arts/number_1/2005/07/top_dog.html

Work Cited http://www.yourpurebredpuppy.com/health/labradorretrievers.html http://www.lorkenfarms.com/labrador%20Retriever%20history.htm http://www.mnn.com/family/pets/stories/5-surprising-facts-about-labrador-retrievers http://wolfpacks.com/testimonials/blog_files/category-id-capes.php https://www.pinterest.com/pin/298996862732048441/ http://envisualizations.com/post/28484986106/why-the-labrador-retriever-is-the-most-popular

Addictions & The Nervous System The nervous system consists of the brain, spinal cord, nerve fibres and specialized nerve cells throughout the body. Drugs that interact with the brain can cause problems with sending or receiving signals in the nervous system. Any drug whether it has very little influence on your body or is illegal/legal can have some affect on your nervous system. Stimulants & Depressants Drugs that are stimulation raise your energy and increase your heart rate an example of a stimulant would be cocaine. The high that cocaine gives you is achieved by blocking the uptake of dopamine by the neuronal cells. By blocking the dopamine from being released in your body prevents your nervous system from helping you with your sense of pleasure/pain and you lose control of your emotion, movements and feelings towards certain things. Achieving this high could cause serious damage to your body and nervous system from blocking it from the dopamine.

Alcoholism Alcohol even in small doses can have many effects on your body and it’s nervous system. it can take away from your judgment, impair memory and when large doses are intake the person can black out and not remembering anything. Alcoholism effects everyones brain differently but it definitely takes a toll on a persons nervous system and there ability to work the way it should.

Recovering If the addiction has been going on for many years and the person was severally dependant it can take a huge toll on the nervous system and it can really suffer. But when these people decide that enough is enough and start moving forward in a more positive way with rehabs and other ways further damage can be prevented. Even though scientist still dont know whether or not the neurological damage can be reversed after all those years.

** Taking A Further Look **

Youtube Video media type="youtube" key="x4PPZCLnVkA" width="560" height="315"

Recommended Reads

http://www.recoveryconnection.org/what-are-the-effects-drugs-brain-infographic/ http://rosslaird.com/blog/the-nervous-system-addictions-and-childhood-development/ http://channel.nationalgeographic.com/drugged/articles/tips-and-reminders-for-a-successful-recovery/ http://www.sciencemag.org/news/2014/07/hardcore-pot-smoking-could-damage-brains-pleasure-cente r

Work Cited http://www.futuresofpalmbeach.com/alcoholism/effects-central-nervous-system/

http://www.livestrong.com/article/209295-effects-of-drug-abuse-on-the-nervous-system/

http://www.orchidrecoverycenter.com/blog/drug-addiction-and-the-nervous-system/ https://www.pinterest.com/pin/511158626427832840/ http://www.recoveryconnection.org/what-are-the-effects-drugs-brain-infographic/ https://www.pinterest.com/pin/200128777167918611/ https://www.pinterest.com/pin/484207397409831753/