Why do humans need pain?
By: Johnathan Vredeveld
You forget to use oven mitts when you go to remove that tray from inside the burning hot kitchen appliance. Upon touching your fingers to the heated metal dish, your hand yanks back with a small "ouch". You can't recall if you meant to pull...
The mathematics of breathing
By: Richard G. Lanzara
Breathing is a rhythmic activity that has many aspects that can be described mathematically. At rest, most adults breath in and out at about 10 to 20 times each minute. By drawing an analogy to the rhythmic tidal motions of the sea, this breathing volume...
Insights into the brain's sense of perception
By: Richard G. Lanzara
The sense of perception requires the stimulation of receptors within the brain. This is usually done through one of our five senses of taste, smell, sound, sight or touch. Interestingly these senses all obey Weber's law or the Weber-Fechner law, which was initially discovered by...
The anatomy of the brain
By: Alicia M Prater PhD
The anatomy of the human brain is as complex as its function. As our understanding increases about how the brain works, the brain is theoretically divided (meaning there are no natural lines or separations) into lobes from front to back based on the relative placement...
Do we use only Ten Percent of our Brains
By: Stephanie Andrews - 447415
I have heard this question asked so many times, and I'm always so shocked at how many people believe this statement to be true. As someone who has studied Neuroscience extensively, I can say without a doubt, that we use every bit of our brain...
By: Y Tian
In the face of our obesity epidemic, the media, scientists, even our next door neighbours are constantly reminding us of the health risks that are related to obesity. Most of us have heard of blood pressure and how it is critical for us to maintain...
Cells involved in human immunity
By: Tami Port MS
The human immune system is composed of three lines of defense, each with different barriers, cells and chemicals that protect us from infection. The second line of immune defense is nonspecific, meaning that it does not target specific pathogens (microbes that cause disease), but instead...
Do Humans only use 10 per Cent of their Brain
By: Mark Frigerio
If evolution has taught us anything, it is that favourable survival characteristics are perpetuated and non-favourable characteristics are eradicated. Applying this to the development of 21st century humans, it has been well documented that our progression from the earliest ancestral hominoid beginnings of homo habilis...
Why we yawn
By: Tami Port MS
Everyone knows that yawns are contagious. A person will often yawn after seeing someone else do so. Even reading the word y-a-w-n can trigger the behavior. And just try stopping in mid-yawn! You can't. Once a person begins to yawn, this instinctive, hard-wired fixed action...
Explanation of the complement system of the nonspecific immune response
By: Tami Port MS
The complement system is a network of signals that function as an essential part of the body's immune defense. This system consists of specific serum protein messengers that circulate in the blood plasma. These proteins, also known as cytokines, essentially communicate within the immune system...

 

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