2024 Blood Cover Art Contest Winner; Year in review: Blood's ten most read articles published in 2024

Blood is a body fluid in the circulatory system of humans and other vertebrates that delivers necessary substances such as nutrients and oxygen to the cells, and transports metabolic waste products away from those same cells. [1] Blood is composed of blood cells …

Mar 17, 2023 · Blood is mostly fluid but contains cells and proteins. Blood has four parts: Red blood cells (bottom right), white blood cells, platelets (middle right) and plasma (top right). What is blood? Blood is an essential life force, constantly flowing and keeping your body working.

Feb 11, 2025 · Blood, fluid that transports oxygen and nutrients to cells and carries away carbon dioxide and other waste products. Blood contains specialized cells that serve particular functions. These cells are suspended in a liquid matrix known as plasma. Learn more about the components and function of blood.

Detailed information on blood, including components of blood, functions of blood cells and common blood tests.

Jan 16, 2024 · Blood supplies essential substances, such as sugars and oxygen, to cells and organs, and removes waste from cells. Hematologists work to identify and prevent blood and bone marrow diseases....

Jul 26, 2017 · Blood is the body fluid in humans and other animals that delivers the essential materials for life to the body’s cells. It has sometimes been called a fluid “tissue,” because like solid tissues it contains several types of cells which …

May 11, 2023 · Blood has many functions in your body. Blood tests help doctors check for certain diseases and conditions. Learn about blood types and blood tests.

Blood is a specialized body fluid. It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including: The blood that runs through the veins, arteries, and capillaries is known as whole blood, a mixture of about 55 percent plasma and 45 percent blood cells.

Mar 16, 2023 · Blood is a vitally important fluid for the body. It is thicker than water, and feels a bit sticky. The temperature of blood in the body is 38°C (100.4°F), which is about one degree higher than body temperature. How much blood you have depends mostly on your size and weight.