Structure and function of the kidneys
By: Tarek Musslimani
The human kidney is comprised of an outer capsule and a cortex and a medulla.The kidney is the site of formation of the urine. The functional unit of the kidney is called nephron and is composed of millions of such units.The nephron is...
The integumentary system explained
By: Alicia M Prater PhD
The integumentary system is more than just the skin - it also includes its accessory features, including the hair, nails, and sweat glands. The integument is the protective outer layer of an organism. In the case of humans and other vertebrates, the integument is the...
Structure and function of the pancreas
By: Tarek Musslimani
The pancreas is an essential organ in humans that without it we cannot live.The pancreas has two known functions. These are an endocrine function and an exocrine function. The endocrine function of the pancreas is especially important in a clinical condition that is called...
Why do humans need pain?
By: C.M. Tucker
DO WE NEED PAIN?Pain is a communication tool. Sometimes the tool gets overloaded or broken. Imagine a drill that won't shut off. Or, one that won't turn on.The anatomy of pain is like a Public Announcement system (PA system). The thing to be...
Why do humans need pain?
By: Opal Elaine Moyer
Pain is an essential ingredient in the growth and development of all humanity, this growth being more mental and spiritual than anything else. This may sound crazy, but it is true. While enduring physical pain makes one stronger and more tolerant physically, emotional and mental...
Medical technology laboratory: The difference between serology and immunohematology
By: Wendy R.
Having been a Medical technologist for about eighteen years, I have some knowledge and experience concerning Serology and Immunohematology. Serology is a biological science which studies antibody-antigen reactions in serum. Serum could be defined as the pale yellow liquid which separates from whole blood once...
Structure and function of the small intestine
By: Tarek Musslimani
Anatomically speaking, the small intestine is divided into three parts. These are the duodenum which is the first part of the small intestine. It is connected with the stomach and there is a valve between the stomach and the duodenum that is called gastro-duodenal valve...
By: Kevin Battleson
Those of us who follow science fiction have heard of this. Its called "wireheading", and originally it was conceived of as a means of recreation, directly stimulating the brains pleasure centers with electrical current. Of course, that is not quite the same intention here, but...
The debate on vivisection
By: Jordan Cropper
Animals have been used for the benefit of humans ever since we came down from the trees onto the African plains. The first great mammals gave us clothes to keep us warm, and food to keep us from starving. Today, animals make up a massive...
Understanding the human brain
By: Basel Varsally
Our brain, the "crown" that sits on top of our heads is one of the most difficult things to understand and yet it's a part of us. Its development greatly varies as in order to understand it, we need to understand how living creatures like...

 

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