HOMEOSTATIC MED4U

There's always one in a crowd,a sort of harbinger of the oncoming mosquito bite,a person, mosquitoes seem to target more than others. What is it about these unlucky chosen few that makes them mosquito magnets?  Mosquitoes are stimulated by numerous factors when seeking out a blood meal. Initially,they are attracted by the carbon dioxide we exhale. Body heat is probably important too,but once the mosquito gets closer,it would respond to the smell of a potent blood source skin. There are upto 400 chemical compounds on the skin that could play a role in attracting or perhaps,repulsing mosquitoes. This smelly mix,produced by bacteria living in our skin and exuded in sweat,varies from person to person and is likely to explain why there is a substantial variation in how many mosquitoes we attract. Genetics probably plays a big role in this,but a little of it may be down to diet or physiology. Sweat contains lactic acid,which is a key mosquito attractant, particularly for human - bit

Being tall may get you a spot on the basketball team,and it may even be good for your self esteem. But I don't think being tall actually helps. Why? Towering over your peers may also affect various aspects of your physical health,as well..  Recently,researchers also investigated the link between height and venous thromboembolism.They also found that men shorter than 5'3" had a 65% lower risk of developing a venous thromboembolism,which is basically a type of blood clot that starts in the vein,than men taller than 6'2". Well why does this happen? Gravity may be influencing the link. It could just be that because taller individuals have longer leg veins,there could just be more surface area for the problems to occur. Increased gravitational pressure in the veins of taller legs can also increase the risk of slow blood flow or even stop the blood flow temporarily. Being tall may be a marker of over - nutrition - specifically eating too many high calorie proteins.

1. Self-awareness: This is when the person has the ability to read their own emotions and recognize their impact.  2.Self-management: Once a person has identified an emotion they are having, they have to learn to control it or make decisions based on it. Self-management is the ability to use intuition or gut feelings to guide decisions based on their emotions. For young people especially, it involves controlling one’s emotions and impulses and adapting to changing circumstances of their environment. 3. Perceiving Emotions: This is the ability to detect and decipher emotions in faces, pictures, and voices. 4. Social awareness: This is the ability to sense, understand, and react to others’ emotions while comprehending social status, standing and where you are in your social network of people. Actually, teens are quite good at this because social hierarchy often matters the most in High School. The key is tying their heightened social awareness to their self-awareness and then maki

Emotional intelligence is the capacity,skill,or ability to identify and assess emotions of oneself,of others and of groups. It is an essential part of our day to day interactions. Well,it's important in three major ways: 1. Relationships with others: Having a high emotional IQ helps individuals connect with others,and develop deep relationships because they will be able to read their friends,and then respond with empathy and compassion. 2. Personal satisfaction and contendedness: It's not only important for your interactions with others,but also for personal well - being. People who are better able to express themselves and distinguish their own emotions - whether it's anger, guilt,fear or even jealousy,are typically happier in life.  3. Worldview: It helps us to be empathetic and compassionate. Our emotional button is often what drives us to help another human,whether it is our friend who is struggling for an exam,or giving a hand to our mother,struggling with the gr

The fact that sleep makes us feel better and that going without sleep,makes us feel worse,puts up the question in our minds,'why sleep is necessary?' One way to think about the function of sleep is to compare it to another of our life - sustaining activity - eating. Hunger is a protective mechanism that has evolved to ensure that we consume the nutrients our bodies require to grow,repair tissues and function properly. Both eating and sleeping are regulated by powerful internal drives. Going without food produces the uncomfortable sensation of hunger,while going without sleep makes us feel overwhelmingly sleepy. And just as eating relieves hunger and ensures that we obtain the nutrients we need, sleeping relieves sleepiness and ensures that we obtain the sleep we need. Still, the question remains: Why do we need sleep at all? Is there a single primary function of sleep, or does sleep serve many functions? A simple - counter argument to one theory is that it is always safer

Growing old is a natural part of life,but that hasn't stopped people from turning to anti - aging skin treatments,specialised diets and other tricks to try to reverse the effects of aging. These efforts to stop aging,may be sorely misplaced; no matter how people try to intervene,it's impossible to stop the aging process.  As a person ages,one of the two things happens to individual cells - a cell with either slow down and lose function (such as when a person's hair cells stop producing pigments and turn grey) or a cell can become cancerous. As people age,they tend to develop cancerous cells in the body,even if they don't show any symptoms. Weeding out sluggish cells could stop the aging process. However,cutting out these cells leaves room for cancerous cells to proliferate. On the other hand,if you get rid of the cancerous cells, sluggish cells linked to aging will accumulate and slowly deteriorate. Suppose,the body got rid of sluggish cells and kept cancerous cell

In many ways, chewing gum is a perfect example of modern chemistry at work. We see miracles of polymers in our everyday life,from plastic bottles to innovative packaging designs. Have you ever considered all the wonderful science behind such a fun food product like chewing gum?  For many years,chicle was the main ingredient in gum base. However,manufacturers eventually began looking for a less expensive alternative to this natural product obtained from the latex of some trees. For most of the present manufacturers,gum base is created using synthetic rubber that has proven to be cheaper to produce,easier to manufacture and even more effective as a base for chewing gum products. One of these is styrene butadiene rubber (SBR). It is a copolymer of styrene and butadiene used for many purposes such as car tires. Other rubber bases used are polyethylene and polyvinyl acetate.  While gum base makes chewing gum sticky and chewy,all the other substances we see in gum are what makes gum a p