In a typical healthy adult human, approximately how many quarts of blood are present in the body?

• A. About 1 quart
• B. About 10 quarts
• C. About 20 quarts
• D. About 5 quarts

Answer: (D)

Verified step by step guidance

1. Understand that the average blood volume in a typical healthy adult human is generally estimated based on body weight and physiological norms.
2. Recall that the average adult has about 4.5 to 5.5 liters of blood circulating in their body, which is a commonly accepted range in anatomy and physiology.
3. Convert liters to quarts, knowing that 1 liter is approximately equal to 1.057 quarts. This conversion helps translate the volume into quarts for easier understanding.
4. Multiply the average blood volume in liters by the conversion factor to get the approximate volume in quarts: \(\text{Blood volume (quarts)} = \text{Blood volume (liters)} \times 1.057\).
5. Recognize that this calculation results in a value close to 5 quarts, which is the typical amount of blood in a healthy adult human body.