In humans, what is the average temperature of blood?

• A. $40°C$ (approximately $104°F$)
• B. $38°C$ (approximately $100.4°F$)
• C. $37°C$ (approximately $98.6°F$)
• D. $35°C$ (approximately $95°F$)

Answer: (B)

Verified step by step guidance

1. Understand that the average temperature of human blood is closely related to the normal core body temperature, as blood circulates throughout the body and helps maintain homeostasis.
2. Recall that the normal human body temperature is approximately 37\degree C (98.6\degree F), which is the commonly accepted average for a healthy individual.
3. Recognize that blood temperature is typically very close to this core body temperature, but can vary slightly depending on factors such as metabolic activity and measurement location.
4. Compare the given options to the known average human body temperature and identify which value aligns best with the physiological norm.
5. Conclude that the average temperature of human blood is approximately 37\degree C (98.6\degree F), as this matches the standard core body temperature.