Body Organs

Muscle tissue, which comprises about 40 percent of human body weight, consist of threads, or muscle fibers, supported by connective tissue. All living cells can move to some degree, but this ability is highly developed in muscles, which act by fiber contraction; the fibers can shorten to two thirds of their resting length. Muscle vary greatly in structure and function in different organs and animals. Based on structure there are two types of muscles; smooth and s treated, "Involuntary", or smooth, muscles are found in the walls of all the hollow organs and tubes of the body (for example, blood vessels and intestines). There react slowly to stimuli from the autonomic nervous system. The "voluntary," or striated, muscles of the body attach mostly to the bones to move the skeleton, and under the microscope their fibers have a cross striped appearance. Striated muscle is capable of fast contractions. The heart wall is made up of special muscle fibers (cardiac muscle),...

One day a florist went to a barber for a haircut. After the cut, he asked about his bill, and the barber replied, 'I cannot accept money from you; I'm doing community service this week.' The florist was pleased and left the shop. When the barber went to open his shop the next morning, There was a 'thank you' card and a dozen roses waiting for him at his door. Later, a cop comes in for a haircut, and when he tries to pay his bill, the barber again replied, 'I cannot accept money from you , I'm doing community service this week.' The cop was happy and left the shop. The next morning when the barber went to open up, there was a 'thank you' card and a dozen donuts waiting for him at his door. Then a Congressman came in for a haircut, and when he went to pay his bill, the barber again replied, 'I can not accept money from you. I'm doing community service this week.' The Congressman was very happy and left the shop. The next...

The spleen is the largest organ of the lymphatic system , it is closely associated with the circulatory system. The function of the spleen include the formation of antibodies and the removal of cell waste products and worn out red blood cells . Most vertebrates have a spleen, but it is not essential to life. The human spleen is located in the abdominal cavity below the diaphragm, behind and the left of the stomach. Its size and weight depend on the amount of blood. It is storing and its immune functions . The organ consist of white pulp, red pulp and marginal zones. Nodules of the white pulp, which contain lymphatic sheaths and lymph follicles, are scattered throughout the organ. The lymphatic sheaths, loose meshes of tissue surrounding a central artery, are composed predominantly of small lymphocytes. The red pulp consist of thin walled sinuses and cords, which hold blood. Marginal zones between the red pulp and white pulp are the end point for many arteries and contain blood cel...

How to clean your earwax from your ear hole? If the earwax have hardened need special tool to remove it and this better be done by doctor who handle this problem. Hardened Earwax Wax Tools The Position of EarWax Earwax removal

The liver, an organ found in all vertebrates, is the largest organ in the human body. It is a spongy, reddish browh gland that lies just below the diaphragm in the abdominal cavity. It serves to metabolize Carbohydrates and store them as glycogen; metabolize lipids (fats, including cholesterol and certain vitamins) and protein manufacture a digestive fluid, bile, filter impurities and toxic material from the blood; produce blood-clotting factors , and destroy old, worn-out red blood cells . Two large lobes, the right and the left, make up most of the liver; attached to the right lobe are the smaller quadrate and caudate lobes. The lobes are made up of lobules - six sided cells arranged in sheets one cell thick - that are closely arranged around blood vessels, blue ducts, lymp vessels, and nerves. Certain reticuloendothelial cells (Kupffer cells) line these lobules and play a role in immunity. Approximately three sides of each cell are in contact with a blood vessel , and there are ...

Ear is one of our important sense organ that function to detect the sound come and differ them. We have two ears on the left and right, so we can differ where the sound come from right side or from left side. If have the similar frequency come for left and right side of ear, its mean come from the top. If there are plug on the ear hole this will disturbed of hearing and cause wrong to detect the source, this plug normally merge from dirt that accumulate on the ear hole captured by ear wax that available along the ear hole. Earwax have function to protect of our ear from infection make water can’t be stick to the ear skin. This earwax is formed by wax glands in the external ear canal. The main component of earwax is keratin. There are different individuals vary considerable in the amount and consistency of their earwax. There are two types described, wet and dry wax, which are inherited. Dry wax is common in Asia people while wet wax is common in western Europe people. Too little ear...

Epidermis Layer The outer layer of our body organ is skin . Skin have very important role of our organ, it cover and protects all our organ that located under our skin. Skin becomes the first holder of every body organ. Skin become a protection from outside effect of our environmental like hot, cold and help keep our bodies at just the right temperature allows us to have the sense of touch. The skin divided into three part layer, the outer layer is epidermis, the outer layer of the skin often contact with the environmental directly and often damage because of direct contact so always build new cells instead of broken cell right below the top layer. Skin damage not just because of shear or contact with environment but also because of the age, when new cells are ready, they start moving toward to the top of epidermis layer. This trip takes two weeks to a month to reach the top layer and change the died cell. This changes make our skin always look young, when our age is old, this cha...