Unique left handed facts
By: Greg Schwartz
Throughout various periods of history, left-handers have faced discrimination and prejudice, and often were forced into becoming right-handed by parents and teachers (as happened to England's King George VI) who would make them write and perform tasks with their right hand. Today, lefties make up...
Structure of the ear and its parts described
By: Dr Pandula Siribaddana
Human ear is a complex structure which by means of linking up with the brain cells enables sound waves to be converted into comprehensible auditory stimulations. The human ear consists of three well demarcated sections. External ear Middle ear Inner ear External ear or the...
Why we yawn
By: Athena Brady
Why we yawn What is a Yawn ? When do we begin to yawn ? Are there possible medical causes for why we yawn ? Can yawning have social or legal implications ? There are several theories that suggest why we yawn. Lets explore these questions and see if...
The causes of bad breath
By: Shen-Li Lee
Halitosis is the term that dentists used to describe "bad breath". Bad breath may be acute (short-term) or chronic (long-term). Acute halitosis varies from day to day, depending on the types of food and drinks that you consume and how well you clean you mouth...
The cardiac cycle of the heart
By: Caroline Darragh
The cardiac cycle is the set of events that occur from the initiation of one heartbeat to the initiation of the next. Each cycle includes the electrical signal that initiates each contraction as well as the mechanical movement of the heart and the opening and...
What is the digestive system and how does it work?
By: D. P. Noe
Our bodies are very unique and smart. Your body is your protector and knows how to break down all the food you eat through the process of digestion. The body is a system where everything just falls in place and know hows to retrieve the...
The appendix: Is it a useless part of the human anatomy?
By: Uma Shankari
Doctors have long considered appendix, a narrow, muscular worm-like pouch found at the intersection of the small and large intestines, a vestigial organ, and they advocated its surgical removal as a preventive measure when it got infected. It was considered a evolutionary remnant, a potential...
How Lorber's work challenges assumptions about brain size
By: Guy Takamatsu
People have been trumpeting Terri's brain size as "proof" of her hopeless condition. However the work of Lorber may bring the necessity or importance of brain size into question. Lorber wrote a provocative article entitled "Do we really need a brain?" He probably...
What are the different types of fractures?
By: Dr Pandula Siribaddana
The term fracture is usually used in referring to a break occurring in a bone in the body. In most instances, these fractures occur due to a force exerted on the bone which exceeds its tolerable stress level. At times, certain individuals are more vulnerable...
Structure and function of the colon
By: Dolores Moore
The colon is an intrinsic and vital part of the digestive system. In simple terms, it is the large intestine in mammals and extends from the small intestine to the rectum. The colon works by absorbing water from food digested, and with the right bacterial...

 

1 48 49 50 51 52 94