By: Erich Rosenberger M.D.
The kidney are organs that are responsible for filtering the blood and making urine. Urine, of course, is a waste product, you need to filter the bad stuff out of your blood and save it somewhere until you are ready to get rid of it...
The basics of the stages of mitosis
By: Erich Rosenberger M.D.
Mitosis is the process by which cells in your body divide. Cell division is the way in which organisms grow. Without a properly regulated mitotic process, tissue growth would become disordered and crazy. The stages of mitosis are well mapped out by cellular biologists. Each...
By: Erich Rosenberger M.D.
There are two primary ways that a cell can divide in to two new cells. The first process is called mitosis, and the other is meiosis. In mitosis, a single cell divides in to two identical copies. This is the process for just about every...
The mechanism of cellular respiration
By: Erich Rosenberger M.D.
Cells breathe? Well, not really - at least not in the same sense that people breathe. Despite this, there is a process in a cell known as cellular respiration. It's also called oxidative metabolism, depending on which particular textbook you may be learning from. Whatever...
By: Erich Rosenberger M.D.
The structure and function of neurons is one of the more interesting aspects of human anatomy and physiology. Neurons are special cells that are able to send electrical and chemical signals around to various parts of the body. There are many different types of neurons...
By: Erich Rosenberger M.D.
Muscle cells are highly specialized cells that allow you to move. They are found in just about every type of animal. Not all muscle cells are the same. There are actually three major types of muscle in a person - each of which has a...
By: Erich Rosenberger M.D.
Life on Earth is based on the concept of a cell. Cells are small structures that contain all the elements needed for life, from genetic material to energy storage and production. Sure, there are debates over the status of viruses are "life" - which don't...
By: Erich Rosenberger M.D.
All of us start as a single cell. When a sperm gets together with an egg, the process of forming an embryo, then a fetus, and on to a baby, gets started. But a single cell can't do all the things required for a fully-grown...
By: Erich Rosenberger M.D.
There are many molecules that are involved in carrying, storing, and transporting genetic information. The most common of these is probably DNA. In addition to DNA, there is a category of molecules known as RNA. RNA is very similar to DNA in structure, but has...
By: Tarek Musslimani
The kidney has several apparent physiological roles that are related to maintaining homeostasis of the body. It is composed of filtering units that are called nephrons. Nephrons in turn are composed of glomeruli and tubules. The filtration of blood occurs in the glomerulus while reabsorption...

 

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