five function of blood
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Blood has a number of functions that are central to survival, including:
supplying oxygen to cells and tissues
providing essential nutrients to cells, such as amino acids, fatty acids, and glucose
removing waste materials, such as carbon dioxide, urea, and lactic acid
protecting the body from infection and foreign bodies through the white blood cells
transporting hormones from one part of the body to another, transmitting messages, and completing important processes
regulating acidity (pH) levels and body temperature
engorging parts of the body when needed, for example, a penile erection as a response to sexual arousal
Another important function of the blood is its protective action against disease. White blood cells defend the body against infections, foreign materials, and abnormal cells.