Thursday, January 23, 2020

TOP TEN DEMERITS OF SMARTPHONES

10When’s The Last Time You Had A Good Night’s Sleep?

How many times have you gone to bed, only to grab your phone and start checking the news, emails, or social media? Or maybe you want to take one last hit of that addictive game you found the other day?
All those apps are stealing sleep from us. When we go to bed, our phones should as well. But that never happens. As we lie there, we hear the sweet siren call of that little unassuming device. Before we know it, our smartphones are back in control and entertaining us with information.
That’s not all a smartphone does, though. No, it needs more than just information. It needs a way to influence us and push back the tiredness and the night. By shining just a little blue light from its screen, it can suppress melatonin and stimulate our brains. Now we don’t feel tired anymore and can pay more attention to our phones.[1]
With all that additional focus, we can really get into that game and get some adrenaline flowing through our systems. Or we can read through those emails and feel the stress from our colleagues telling us just what new nightmares are headed our way at work tomorrow.
Even when we’re done with our phones, all that adrenaline or stress makes our minds too busy to think about sleep. So we lie in bed bored. Eventually, the boredom is too much so we go back to our smartphones. Before long, it’s time to get up and start another day.

9Loved Ones Don’t Want To Compete For Our Attention

It’s known as phubbing. Focusing on our smartphones instead of engaging romantically with our loved ones is a big problem. Our smartphones were supposed to bring people together and make the world more connected.
But sometimes, it may bring the wrong people together at the wrong time. While we are busy connecting to coworkers, friends on the other side of the world, or that unknown opponent we are currently crushing, we are distant from the people in the same room with us.[2]
When our loved ones want to connect with us but can’t pull us away from our phones, they’re not happy. If we cannot give the people in our relationships the time and attention they deserve, they are rightfully discontented. Everyone’s relationship satisfaction suffers, and our loved ones will often feel jealous of our smartphones.
If so, our relationships will not be strong. Furthermore, if we can’t pry ourselves away from our phones long enough to notice and fix these problems, how can our human relationships survive? Before we know it, our relationships with our smartphones will be the only meaningful ones we have left.

8We Can’t Actually Talk To Someone These Days

Long ago, people would interact with each other through face-to-face communication. With the intimacy and bonds produced by that type of social contact, people were able to connect with each other and build strong relationships.
Over time, technology has become a middleman in our conversations, whether through emails, text messages, self-checkout machines, or social media. In so many situations, people don’t directly communicate with each other anymore.
The use of smartphones has been linked to loneliness and shyness in individuals. It’s tough when you are lonely and crave interactions with others, yet you are too shy to actually go out and make those contacts. A study of 414 university students in China showed that the more lonely and shy a person was, the more likely he was to be addicted to his smartphone.[3]

7The Joneses Aren’t Just The People On Our Street Anymore

Photo credit: legion.org
Ever been on social media? Ever seen all the beautiful, picture-perfectmoments that people post? All the places they visit and cool toys that they buy?
There’s an old saying about the need to keep up with the Joneses—traditionally those in our neighborhoods whom we use as a benchmark for the social class we want to maintain.
The Joneses have a shiny, new luxury car? What will people think about my 10-year-old sedan with a bit of rust creeping up the door? They are having an elaborate party for their child complete with bouncy castle? How do I make sure that my kid doesn’t see me as a failure at his next party if I can’t afford that?
Unfortunately, smartphones and the Internet have greatly expanded our neighborhoods. Instead of just looking at our neighbors every time we leave or come home, our smartphones are letting us peer into the lives of hundreds of “friends” all around the world.
Every time we unlock our phones, we are greeted with new posts showing all the amazing things happening to people around the world. Then we look up and see that our reality doesn’t match what’s on the phone. Unfortunately, this leads to debt, stress, and depression when we believe that we can’t keep up with everyone else.[4]

6FOMO

Along with keeping up with the Joneses is FOMO (“fear of missing out”). This is when we see people doing or getting something new or exciting. It electrifies us, and we want to get in there with everyone. There’s a fear that if we don’t do it now, the opportunity will be gone.
This concern can lead us to make impulse purchases and accept debt just so we are included in the experience of having this shiny new thing. These days, digital technology through smartphones constantly shows us shiny new objects that we can be a part of. The people and companies making these things are mastering how to foster the feeling of FOMO and make their products or services viral.
All of this can lead to reckless spending on unnecessary things. Then we feel depressed when we see the next shiny thing but realize we can no longer borrow enough money to grab it.[5]

5It’s Becoming The Most Expensive Member Of Our Household

Remember the days when you’d walk into a cell phone store, sign up for basic talk and text service, and get a free phone? Those days seem long gone. Now it’s all about talking us into the latest gadget that we can’t live without and that we’ll be upgrading in a year.
Smartphones cost us so much money. On average, a smartphone in North America is $567. Just for the phone. Don’t forget that we need a nice case to protect the phone, insurance if the case fails us, chargers everywhere, and paid apps to make those phones even more useful.
Phones increase in price at a rate of about 12 percent a year. In 2008, the iPhone sold for $499 and, in late 2018, the XS Max sold for $1,099. If prices continue to trend in that direction, we could be looking at spending over $5,000 for an iPhone 20 years from now.[6]
Now let’s talk service. That basic talk and text package we used to enjoy years ago just won’t cut it now. Now we need unlimited data, too. All those apps we buy are data hungry. We generally spend around $80 a month for that.

4Do We Even Remember Facts Anymore?

How many times has this happened to you: You’re with a group of people, and someone asks a question. No one knows the answer, so everyone whips out their smartphones to see who can find the answer first. Someone yells it out, gets the kudos for the best Google skills of the moment, and everyone moves on. Within minutes, everyone is on a different topic and is completely forgetting the answer to the earlier question.
In the past, getting answers was work. We needed to find and schedule time with an expert, go to the library and read a book, or experiment and figure it out for ourselves. All this work left a lasting impression on our minds and made the answer hard to forget. These days, information is so easily obtained that finding it is no longer an adventure.[7]
Where we used to rely on ourselves and those with whom we have relationships to remember things, we now have our smartphones with Internet access to handle it for us.
What happens, though, when we are separated from our smartphones and they are not there to assist us when we need the information?

3Can We Read A Map Or Drive Anywhere From Memory?

Photo credit: thenational.ae
When some of us need to travel to a place we’ve never been or somewhere we don’t go often, our first step is to pull out our smartphones to get turn-by-turn directions. Long gone are the days of building a mentalmap from past experience and learning to find places through our own sense of direction. Even longer gone are the days of opening a paper map to draw a route to where we want to go.
Learning new routes and how to navigate on our own builds spatial maps in our brains. We understand the distances between places, where they are in relation to each other, and how to move from one place to another. We gain the ability to look at the world around us and actively plan our movements.
Unfortunately, with turn-by-turn directions always available through our smartphones, these spatial maps are often not well-built. We are focused on our phones instead of interpreting the world around us. Since we know that the directions will always be available to us in the future, we are far less likely to remember them on our own.[8]

2We Really Can Be Afraid Of Losing Access To Our Phones

Nomophobia is the fear of losing access to our smartphones whether through dead batteries, loss of signal, or loss of the entire phone itself. Research revealed four main sources that feed this fear: inability to communicate, lost connectedness, loss of access to information, and lost convenience.
Basically, we’re addicted. Our phones provide us with access to loved ones and answers to all our questions. These devices also remove so many roadblocks any time we want. Losing those capabilities leads to fears. We are all on our own.
It’s becoming serious. Thirty-eight percent of surveyed American teenagers said they didn’t think they could live one day without their smartphones. Seventy-one percent said the same about a week.[9]

1We Just Don’t Have Time To Get Anything Done Anymore

Do you ever feel like you just don’t have time anymore? Like the world has become so busy that it’s hard to keep up? How much do you use your smartphone?
We are all fairly attached to our smartphones. Those little devices are good at snatching our attention, making sure they are never far from us, and keeping us coming back often for any updates they might offer.
Perhaps our struggles with and management of time all start with our smartphones. Constantly getting all those little updates from our phones and then waiting and hoping for the next update releases a bit of dopa-mine in our brains. This makes us happy and excited and also keeps us coming back for more.[10]
Looking for those hits of dopa-mine, we end up spending more time than we realize on our phones when we could be taking care of all those other things we never seem to have time for.

TOP AMAZING TEN

   TOP TEN:

  1. TOP TEN BILLIONAIRES AND THEIR STORIES
  2. TOP TEN COUNTRIES WITH LEAST CORRUPTION
  3. TOP TEN HIGHEST PAID SINGERS OF THE WORLD
  4. TOP TEN MOST POWERFUL-MEN IN THE WORLD
  5. TOP TEN BIGGEST POLITICAL PARTIES IN THE WORLD
  6. TOP TEN MOST BEAUTIFUL WOMEN IN THE WORLD
  7. TOP TEN MOST PEACEFUL COUNTRIES IN THE WORLD
  8. TOP TEN MOST UNDERDEVELOPED COUNTRIES 
  9. TOP TEN EMERGING COUNTRIES OF THE WOLRD
  10. TOP TEN DEMERITS OF USING SMARTPHONE     



Friday, January 17, 2020

SYSTOLE AND DIASTOLE PHASES IN TH HEART

Systole means the contracted phase whereas Diastole means the relaxed phase. In heart, it starts with the contraction of the upper two auricles (known as auricular systole) meanwhile relaxation of the lower two ventricles (known as ventricular diastole), followed by contraction of the lower two ventricles (known as ventricular systole) meanwhile relaxation of the upper two auricles (known as auricular diastole).
Here, we are discussing briefly about the events that takes place while auricular systole and ventricular systole.

AURICULAR SYSTOLE AND VENTRICULAR DIASTOLE:

  • Auricular muscles contract.
  • Opening of vena cava vessels and pulmonary vein close.
  • Blood enters ventricles by crossing through tricuspid and bicuspid valves.
  • Semilunar valves at the root of the pulmonary artery and aorta are closed to prevent flow of blood back into ventricles.

VENTRICULAR SYSTOLE AND AURICULAR DIASTOLE:

  • Ventricular muscles contract.
  • Tricuspid and bicuspid valves close with a jerking sound.
  • Blood passes into aorta and pulmonary artery through semilunar valves.
  • Atria draw in blood through the opening of vena cava and pulmonary vein. 

THE HEART SOUNDS - "LUBB" and "DUP"

  • The first sound "LUBB" is produced when the tricuspid and bicuspid valves get closed sharply at the start of ventricular systole.
  • The second sound "DUP" is produced at the starting of ventricular diastole when the semilunar valves present at the roots of aorta and pulmonary artery get closed sharply.

THE HEART BEAT



Thursday, January 16, 2020

CIRCULATION OF BLOOD IN HUMAN BODY

The circulatory system comprises of four-chambered heart, arteries, veins and capillaries. As we ,humans, have a closed blood circulation system, the blood flows from the heart through blood vessels to various organs and back to the heart.

THE HEART :

  • The heart in the human is about the size of our closed fist.
  • It is protected by a thin double walled membranous covering called pericardium. It contains a lubricating pericardial fluid which protect the heart from mechanical injuries.
  • The heart consists of four chambers - two upper atria and two lower ventricles.
  • As compared to ventricles, the auricles have thinner muscular wall as they have to pump the blood into the very next ventricles whereas ventricles have to pump blood to long distance.

  Blood vessels entering and leaving the heart:


 
    Blood vessels entering the heart:
  • The upper two chambers of the heart i.e. right atrium and left atrium receives the blood.
  • The right atrium receives two large vessels- anterior vena cava (also known as superior vena cava) and posterior vena cava (also known as inferior vena cava) .Anterior vena cava receives deoxygenated blood from the upper part of the body including head , chest and arms whereas Posterior vena cava receives blood from lower region of the body including legs and abdomen.
  • The left atrium receives four pulmonary veins (two from each lungs) bringing oxygenated blood.(It is the only vein in the human body that carry oxygenated blood.)   
    Blood vessels leaving the heart:

  • The lower two chambers of the heart i.e. right ventricle and left ventricle pump the blood to the long distance and hence, two large blood vessels arise from here. 
  • The Pulmonary artery arises from right ventricle carry deoxygenated blood to the lungs for oxygenation.(It is the only artery in the human body that carry deoxygenated blood.)
  • The aorta arises from left ventricle carries oxygenated blood and supply it to all parts of the body.  

    Valves:

  • Valves regulate the flow of blood in a single direction i.e. it avoid the back flow of the blood back to vessel carrying it.
  • There are four valves present in heart.

  1. Tricuspid valve (also known as right atrio-ventricular valve) is located between right auricle and right ventricle to avoid the back flow of the deoxygenated blood back to right auricle. Chordae tendinae hold the valves in the position preventing upturning due to pressure.
  2. Biscuspid valve (also known as left atrio-ventricular valve) is present between left auricle and left ventricle.
  3. Pulmonary semilunar valves are located at the opening of the right auricle into the pulmonary artery.
  4. Aortic semilunar valves are located at the opening of the left ventricle into aorta.