A Beginner's Guide to Estimating the Blood Pints in a Human Body

Introduction

Everyone knows that the human body consists of blood pints, bones, joints, and combination of muscles. The amount of blood in an individual is about 7% of his total body weight. However, the percentage is an estimate, as the exact amount of blood depends solely on the sex of a person, his native place, and other factors. For this, our blog post will discuss the blood pints, its components, and analyze the common query of how many liters of blood are in the human body.

Overview and the Functions of Human Blood

Blood refers to the connective tissue fluid, which flows through the veins and arteries to supply enough oxygen and nutrition to body tissues required for the survival. The fluid also filters the body’s waste products and eliminates them via feces and urine. Unlike pure water, blood is relatively thick liquid. It also has certain components and blood vessels with smooth surface to balance various blood clotting factors.

Components of Human Blood

Before knowing how many blood pints in a human body, you must know the components present in human blood. Human body produces approximately 2 million of red blood cells per second with the help of stem cells present in its bone marrow. The blood has the following components-

Red Blood Cells

Red blood cells carry oxygen and vital nutrients to the tissues.

Platelets

These cells are responsible to prevent blood loss to support blood clotting.

Plasma

Plasma is the blood’s liquid component, which contains about 90% water.

White Blood Cells

White blood cells are significant parts of the human immune system. These cells work as immunity boosters and protect you from infections.

Blood Volume Estimation Based on Age and Pregnancy

If you have still questions related to how many liters of blood are in the human body, we should say that any average human adult has 8% of blood or 8 pints to 10 pints of blood corresponding to his total body weight.

As a single blood pint equals to 473.18 ml, a human adult has approximately 10 pints or 5 liters of blood in his body. However, the exact volume may vary based on certain factors. For instance, a pregnant woman may have 50% more blood volume than other women. Moreover, the average blood quantities in humans are as follows-

• An average-size female of 5.5 feet and of about 75 kg has 9 pints of blood.
• An average-size male of 6 feet and of about 90 kg has 12 pints of blood.
• An infant has 1.2 fluid ounces for a single body weight pound or about 80 ml of blood in one kilogram.
• A child has 1 to 1.2 fluid ounces for each body weight pound or about 75 ml of blood in one kilogram.

Factors that Affect the Human Blood Volume

Once you get information on how many pints of blood in human body, you must learn the factors affecting the human blood volume. The blood volume may increase or reduce, because of which patients may suffer from hypervolemia or hypovolemia. Accordingly, the conditions causing hypervolemia or hypovolemia are as follows-

Hypervolemia Conditions and Symptoms

An individual may suffer from high blood volume or hypervolemia because of the following conditions-

• Excessive intake of common salt
• Liver and kidney failures
• Congestive heart failure

Accordingly, the affected people may have the following symptoms-

• Breathing shortness
• High blood pressure or hypertension
• Congestive heart failure
• Abdominal swelling
• Wrists, ankles, and feet swelling
  
  

Hypovolemia Conditions and Symptoms

A person may suffer from hypovolemia or reduced blood volume because of the following conditions-

• Blood loss or hemorrhage
• Dehydration

Reduced blood volume may result in hypovolemic shock and it takes place whenever your body tries to maintain its balance for reducing the blood flow via-

• Increased breath and heart rates
• Low blood pressure
  
  

How a Human Body Maintains its Blood Levels

The cardiovascular system or circulatory system of the human body circulates blood across the body. The heart pumps blood to the human blood vessels to deliver blood to the diverse body organs. Accordingly, the blood supplies oxygen and vital nutrients.

Moreover, blood volume also depends on kidneys, as they regulate or maintain fluid balance in humans. Besides, the skeletal system and nervous system’s functions also determine the blood levels. The skeletal system has bone marrows responsible to produce blood cells. In contrast, the nervous system activates other body organs/systems to accomplish their tasks.

Conclusion

Blood pints and blood volume in humans vary depending on their age, health issues, body weight, and pregnancy conditions. However, human beings must be familiar with the symptoms and conditions of both increased and reduced blood volumes. Accordingly, one should work responsibly and take the necessary steps to maintain healthy circulatory systems, kidneys, liver, and other body organs that affect the blood volume.

---