Nerve fiber-Types and Function

In an organism there are different types of nerve fibers.The difference can be in function, diameter, conduction velocity etc..It was Erlanger and Gasser who studied mammalian nerve fibers and classified it into various types.They observed and...

Action potential in a Neuron

In a nerve cell, communication take place by the process of excitation and conduction of electrical impulses.These impulses are the language of neurons.The stimulus which cause excitation can be electrical, chemical or mechanical.Once the nerve is...

Collagen Type I has a globular non-collagenous part at one end of the molecule. It has no disulfide bonds. It seems that collagen is synthesized only during the formation of cartilage or inside collagen gels. We will focus on the description of...

Corneal Refractive Therapy Lens

Corneal Refractive Therapy (CRT) Lens are special type of lens which correct the problem with vision and helps to have normal vision without actually wearing the lens.Unlike contact lens and glasses, you have to put it on when you go to sleep and...

Morphology of Nerve Cell

In a human body there are different types of nerve cells and the number of nerve cells in Central nervous System only is estimated to be about 100 billion.Though the nerve cells are different in shape and size, most of them has the same parts as a...

  There is no limit to the inventive powers of the human minds and this limitless power has enabled us to scale one height after another. The history of scientific achievements records the triumph of science in minute details. What all started as...

Can Stem Cells Cure AIDS ?

Every tissue and organ of human body is composed of different types of cells. The nerve cells are different from the cardiomyocytes or cells of the heart. It is impossible to transfer a differentiated cell from a tissue or an organ to another....

Sexual Reproduction

Sexual reproduction is a complex process involving two individuals or parents of different sexes i.e. male and female. The formation of two different types of gametes by male and female takes place in their gonads i.e., testis in male and ovary in...

Chemical messengers are involved in communication and maintaining consistency and equilibrium of the internal environment of the body of the animal and in the body’s response to various stimuli. One type of chemical messenger is known as hormone....

Acquired Immunodeficiency Syndrome or AIDS has become the biggest challenge for medical science.It is caused by a virus called Human Immunodeficiency Virus or HIV.Now AIDS is a disease of pandemic proportions and a cure or vaccine may be decades...

Genetics is a very fast growing field in the 21st century.Genetic engineering and biotechnology has revolutionised medical science.Now every disease has got a genetic base, and the scope and research in this field are getting more and more...

A study of Human BLOOD

Blood is a fluid circulating through the tissues of the body, performing the functions of transporting oxygen, nutrients, electrolytes, hormones, vitamins, antibodies, heat and oxygen and carrying waste products to the organs of excretion by...

Hemolytic Disease of the Newborn

Hemolytic disease of the newborn, is a very common clinical condition seen in the second child born to Rh negative mother.For this disease to occur, the mother should be Rh negative and the child must be Rh positive.Here the chance for the child to...

Nervous System of Man

All systems in human body are very much close to each other and interdependent. For example, digestive system and circulatory system are interdependent because the distribution of digested food becomes possible only through blood circulation on the...

Hi friends, in this article will see about the various process involved in Respiration. Most of know only about Inspiration and Expiration. But we are not aware of the processes taking place in between them. Let us now see them in...

BLOOD GROUP MATCHING FOR TRANSFUSION

Blood transfusion is always a life saving process.When someone is in need of blood, we usually don't hesitate to give, especially when the person is our family or relative.There are people who donate blood and it is considered to be a very noble...

Sexual Reproduction in Man

In human beings, reproduction is a very complicated process involving two sexes i.e. Male and Female. In the male, the male gametes or spermatozoa are produced in the testes through the process of spermatogenesis but in the female, the female...

The Gene Therapy

The basic principle of gene therapy is to replace defective or faulty genes with normal genes. Although genetic disorders can often be prevented by prenatal diagnosis and genetic counseling but still not possible to cure genetic diseases. Gene...

Transgenic animals

Transgenic animals are genetically engineered animals in which there is addition of exogenous DNA, leaving host DNA intact. The modification of germ cells by gene manipulation in vitro is referred to as transgenesis. The term ‘transgenic’ in case...

ulcer

an  ulcer  is  a   break   in  the   continuity   of   the  covering  epithelium-skin  or   mucous  membrene it  may  either  follow  molecular  death  of  the  surface  epithelium  or its  traumatic   removal   history:mode  of set:traumatic  ...

Powered by CjBlog