Circulatory system

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis. The study of the blood flow is called hemodynamics. The study of the properties of the blood flow is called hemorheology.

The circulatory system is often seen to comprise two separate systems: the cardiovascular system, which distributes blood, and the lymphatic system, which circulates lymph. The passage of lymph for example takes much longer than that of blood. Blood is a fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated by the heart through the vertebrate vascular system, carrying oxygen and nutrients to and waste materials away from all body tissues. Lymph is essentially recycled excess blood plasma after it has been filtered from the interstitial fluid (between cells) and returned to the lymphatic system. The cardiovascular (from Latin words meaning "heart" and "vessel") system comprises the blood, heart, and blood vessels. The lymph, lymph nodes, and lymph vessels form the lymphatic system, which returns filtered blood plasma from the interstitial fluid (between cells) as lymph.

I Need You

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Ed Sheeran

Edward Christopher "Ed" Sheeran (born 17 February 1991) is an English singer-songwriter and musician. He was born in Hebden Bridge, West Yorkshire and raised in Framlingham, Suffolk. After dropping out of school at 16, he moved to London the following year, in 2008, to pursue a career in music. In early 2011, Sheeran independently released the extended play, No. 5 Collaborations Project, which caught the attention of Elton John and Jamie Foxx. After signing with Asylum Records, his debut album, + (read as "plus"), was released on 9 September 2011 and has since been certified six-times platinum in the UK. The album contains the single "The A Team", which earned him the Ivor Novello Award for Best Song Musically and Lyrically. In 2012, Sheeran won the Brit Awards for Best British Male Solo Artist and British Breakthrough Act.

Sheeran's popularity abroad began in 2012. In the US, he made a guest appearance on Taylor Swift's fourth studio album, Red. "The A Team" was nominated for Song of the Year at the 2013 Grammy Awards, where he performed the song with Elton John. He spent much of 2013 opening for Swift's The Red Tour in North America dates. In late 2013, he performed three sold-out shows at New York's Madison Square Garden as a headline act. He was nominated for Best New Artist at the 2014 Grammy Awards.