Blood

Blood is a bodily fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells. When it reaches the lungs, gas exchange occurs when carbon dioxide is diffused out of the blood into the pulmonary alveoli and oxygen is diffused into the blood. This oxygenated blood is pumped to the left hand side of the heart in the pulmonary vein and enters the left atrium. From here it passes through the mitral valve, through the ventricle and taken all around the body by the aorta. Blood contains antibodies, nutrients, oxygen and much more to help the body work.

In vertebrates, it is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), and contains dissipated proteins, glucose, mineral ions, hormones, carbon dioxide (plasma being the main medium for excretory product transportation), and blood cells themselves. Albumin is the main protein in plasma, and it functions to regulate the colloidal osmotic pressure of blood. The blood cells are mainly red blood cells (also called RBCs or erythrocytes), white blood cells (also called WBCs or leukocytes) and platelets. The most abundant cells in vertebrate blood are red blood cells. These contain hemoglobin, an iron-containing protein, which facilitates oxygen transport by reversibly binding to this respiratory gas and greatly increasing its solubility in blood. In contrast, carbon dioxide is almost entirely transported extracellularly dissolved in plasma as bicarbonate ion.

Tucker

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You Rock My World

"You Rock My World" is a song by American recording artist Michael Jackson from his tenth and final studio album Invincible (2001). It was released as the lead single from the album on August 22, 2001 by Epic Records. The lyrics pertain to being in love and trying to gain a woman's affection. Produced by Jackson and Rodney "Darkchild" Jerkins and written by Jackson, Jerkins, Fred Jerkins III, LaShawn Daniels and Nora Payne, the song is musically a disco-pop song with influences from Jackson's songs from his previous studio albums with Quincy Jones.

The song received mixed reviews from music critics, with reviewers commenting that Jackson could have made a better effort for it and that it was not his best material, while other reviewers generally praised the song's composition and Jackson's vocal performance. "You Rock My World" was commercially successful worldwide and peaked at number ten on the Billboard Hot 100, becoming Jackson's first top ten song in the United States in over six years, and his last in the country until "Love Never Felt So Good" (a duet with Justin Timberlake) hit number 9 in 2014. This success was achieved on airplay alone, as the song was not released as a commercial single in the United States. "You Rock My World" topped the French music chart for three consecutive weeks. It also reached the top ten in Australia, Austrian, Canada, Danish, Finnish, Italian, Swedish, Swiss and the United Kingdom music charts.

Michael Jackson

Michael Joseph Jackson (August 29, 1958 – June 25, 2009) was an American singer, songwriter, record producer, dancer, and actor. Called the King of Pop, his contributions to music and dance, along with his publicized personal life, made him a global figure in popular culture for over four decades.

The eighth child of the Jackson family, he debuted on the professional music scene along with his elder brothers Jackie, Tito, Jermaine, and Marlon as a member of the Jackson 5 in 1964, and began his solo career in 1971. In the early 1980s, Jackson became a dominant figure in popular music. The music videos for his songs, including those of "Beat It", "Billie Jean", and "Thriller" from his 1982 album Thriller, were credited with breaking down racial barriers and with transforming the medium into an art form and promotional tool. The popularity of these videos helped to bring the then-relatively-new television channel MTV to fame. His 1987 album Bad spawned the U.S. Billboard Hot 100 number-one singles "I Just Can't Stop Loving You", "Bad", "The Way You Make Me Feel", "Man in the Mirror", and "Dirty Diana", becoming the first album to have five number-one singles on the Billboard Hot 100. With videos such as "Black or White" and "Scream", he continued to innovate the medium throughout the 1990s, as well as forging a reputation as a touring solo artist. Through stage and video performances, Jackson popularized a number of complicated dance techniques, such as the robot and the moonwalk, to which he gave the name. His distinctive sound and style has influenced numerous artists of various music genres.