Uncover the Secrets of Blood

Facts about Blood

• Blood is a fluid that circulates in the heart, arteries, capillaries, and veins of vertebrate animals.
• It carries nourishment and oxygen to all parts of the body and removes waste products.
• Blood makes up 8% of the body's weight.
• Males have 5-6 liters of blood, while females have 4-5 liters due to their different sizes.
• The mean temperature of blood is 38 degrees Celsius.
• Blood has a pH of 7.35-7.45, making it slightly basic.
• Blood is about 4.5-5.5 times as viscous as water, affecting its ability to clot, perfuse tissue, and influence vascular resistance.
• Blood in arteries is brighter red than blood in veins due to the higher level of oxygen.
• Whole blood has a viscosity of 4.5-5.5, while blood plasma has a viscosity of 2.0.
• The osmolarity of blood is 280-300mOsm/L, which is the concentration of solute particles per liter.
• The mean salinity of blood, mainly NaCl, is 0.85%.
• No artificial substances were mentioned in the text.