The muscular system is responsible for the movement of the human body and muscles come in all shapes and sizes. In the muscular system, muscle tissue is categorized intothree distinct types: Skeletal muscle: Skeletal muscles (also called voluntary muscles) are attached to bones by tendons and produce all the movements of body parts in relation to eachRead More →
Human immunodeficiency virus (HIV) damages the cells in the immune system, reducing the number of some of the white blood cells (CD4+ T cells) in the body and weakening the ability to fight everyday infections and disease. If left untreated, HIV infection eventually progresses until the immune system is tooRead More →
Sildenafil, sold first with the brand name Viagra in 1998 is a medication used to treat the symptoms of male sexual impotence problems. In addition, it is used to treat pulmonary arterial hypertension (high blood pressure in the blood vessels that supply the lungs). After 2013, when the patent ofRead More →
In 1972, the geneticist Susumu Ohno formalized the term “junk DNA” to describe DNA that do not encode protein sequences or non-coding DNA. In 2000, scientists presented the Human Genome Project confirming that around 98% of the human genome had no apparent function. Therefore, only about 2 percent of DNARead More →
Darwin said that humans and monkeys have a common ancestor (around 5-10 million years ago), freaking out creationists by the fact that humans are apes. Therefore, humans sit on the same branch of the evolutionary tree as great ape species, such as chimpanzees, our closest living primate relative. By comparingRead More →
If you think you don’t have viruses in our body because you are not sick you are totally wrong because many viruses chronically infect us without inducing any disease. The viruses living in and on the human body is known as the human virome and may infect both human cellsRead More →
Immunoglobulins (Ig) or antibodies serve as key detection molecules in the immune system. Antibodies refers to proteins that are produced in B-lymphocytes by the body’s immune system in response to foreign substances or infections, including bacteria or viruses. There are five major classes (isotypes) of immunoglobulins: IgA (immunoglobin A) IgDRead More →
Ebola disease is a severe disease caused by infection with the Ebola virus and leading to severe and often fatal hemorrhagic fever in humans. Ebola virus belongs to the genus Ebolavirus and its genome is a single-stranded RNA approximately 19,000 nucleotides long, encoding seven structural proteins which assemble with the genomic RNA to form one ofRead More →
