Blood Open Access Articles
Blood is a constantly circulating fluid providing the body with nutrition, oxygen, and waste
removal. Blood is generally liquid, with numerous cells
and proteins suspended in it, making blood "denser" than pure water. The ordinary person has about 5 liters (more than a gallon) of blood.
A liquid known as plasma makes up concerning 1/2 the content of blood. Plasma contains proteins that facilitate blood to clot, transport substances through the blood, and perform alternative functions. Plasma conjointly contains aldohexose
and alternative dissolved nutrients.
About 1/2 blood volume consists of blood cells:
• Red blood cells, that carry chemical element to the tissues
• White blood cells
that fight infections
• Platelets, smaller cells
that facilitate blood to clot
Blood is conducted through blood vessels (arteries and veins). Blood is prevented from coagulation within the blood vessels by their smoothness, and therefore the finely tuned balance of coagulation factors.
Blood plays a very important role in regulation the body's systems and maintaining physiological condition. Alternative functions embody provision chemical element and nutrients to tissues, removing waste, transporting hormones
and alternative signals throughout the body, and regulation body pH scale and core temperature.
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