Saturday, 9 June 2012

Blood

Blood is a liquid in humans and many animals. Blood is pushed through the organism by the heart, and brings nutrients and oxygen to our tissues. It also takes away waste and carbon dioxide from tissues.

Blood is made up of blood plasma and various cells — red blood cells, white blood cells and platelets. Platelets help blood clot. Hemoglobin is in red blood cells. White blood cells help fight infections and heal wounds.

 

Apple


The apple is the pomaceous fruit of the apple tree, species Malus domestica in the rose family (Rosaceae). It is one of the most widely cultivated tree fruits, and the most widely known of the many members of genus Malus that are used by humans. Apples grow on small, deciduous trees. The tree originated in Western Asia, where its wild ancestor, Malus sieversii, is still found today. Apples have been grown for thousands of years in Asia and Europe, and were brought to North America by European colonists. Apples have been present in the mythology and religions of many cultures, including Norse, Greek and Christian traditions. In 2010, the fruit's genome was decoded, leading to new understandings of disease control and selective breeding in apple production.

Tampon

A tampon is a mass of cotton, rayon, or a mixture of the two inserted into a body cavity or wound to absorb bodily fluid. The most common type in daily use (and the topic of the remainder of this article) is designed to be inserted into the vagina during menstruation to absorb the flow of menstrual fluid. Tampons are also used to absorb blood from nosebleeds. Several countries—including the United States, under the banner of the Food and Drug Administration (FDA)—regulate tampons as medical devices. In the United States, tampons are a Class II medical device. Tampon originated from the medieval French word tampion, meaning a piece of cloth to stop a hole, a stamp, plug, or stopper