The skeletal system is made up of some 206 bones in adults which provides form for the soft tissues of the body, protection and a hard lever structure for the muscles. Bones are much more than calcified masses that are present in various shapes and is living tissue just like any other part of the body. These are dynamic >> Read More ...
The middle ear lies behind the eardrum and is separated from the inner ear by the round and oval window. This area is somewhat shaped like a box with six walls. It contains the auditory ossicles (hearing bones) that transmits vibrations from the eardrum to the hearing apparatus in the inner ear. A hollow cavity known as >> Read More ...
There are three pairs of salivary glands in the mouth which produce mucoid and serous fluids known as saliva. The largest of these glands are the parotid glands, with one located on each side of the face. The parotid gland roughly resembles an inverted pyramid. It is located behind the angle of the jaw, slightly in front >> Read More ...
Inflammatory bowel disease (IBD) is a chronic inflammatory disease of the bowels, mainly affecting the colon and often involving the neighboring parts of the gut. Although the exact cause of inflammatory bowel disease is unknown, it appears to be associated with a genetic defect on the mucosal lining of the bowels and/or >> Read More ...
The alimentary tract extends from the mouth to the anus. Most of the length of this tract is made up on the bowels, namely the small intestine and large intestine. The small intestine is divided into three parts – duodenum (leading from the stomach), jejunum and ileum (leading to the large intestine). The large >> Read More ...
What is alopecia areata? Alopecia areata is a patchy hair loss that is usually of sudden onset and can arise on any hairy part of the body. It is a non-scarring type of hair loss with no obvious skin disease or lesion or other underlying systemic disturbance. Most cases involve the scalp or beard and rarely it can all of >> Read More ...
The average human scalp loses about 100 strands of hair per day. This hair loss is normal and represents a very small potion of the strands present on the scalp. Sometimes hair loss becomes excessive and may affect the entire head (diffuse hair loss) or patches (focal hair loss). There are several different types and >> Read More ...
The hair follicles go through different phases of growth. At any one time, most of the follicles are in the active growth phase known as the anagen phase. Majority of the remaining follicles are in a resting phase known as telogen, where there is no growth but rather preparation for future growth or shedding. A small >> Read More ...
Human hairs are elongated strands primarily composed of the protein keratin. The main function of hair is to provide warmth, both by acting as an insulator on the surface and by standing erect in cold and windy conditions to slow down the flow of air on the skin surface. It may also offer some degree of protection, albeit >> Read More ...
Hepatitis is an inflammation of the liver and may be due to a number of insults, from chemical irritants, to infections and autoimmune mechanisms. Viral hepatitis is one of the most common forms of liver inflammation and is caused by an infection with a virus. Although many different types of viruses can cause viral >> Read More ...
