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18 Questions

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Blood Composition and Functions

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Questions and Answers

What is the approximate percentage of water in plasma?

98%

95%

80%

92% (correct)

What is the pH range of red blood cells?

7.35 - 7.45 (correct)

7.50 - 7.60

7.20 - 7.30

7.70 - 7.80

What is the role of hemoglobin in red blood cells?

Regulating blood pH

Transporting oxygen (correct)

Transporting carbon dioxide

Maintaining blood pressure

How do red blood cells primarily transport carbon dioxide?

Through the formation of carbonic acid Signup and view all the answers

What is the approximate lifespan of red blood cells?

120 days Signup and view all the answers

What is the color of oxygenated arterial blood?

Bright red Signup and view all the answers

What percentage of the adult human body is composed of water?

50-60% Signup and view all the answers

Which of the following body fluids serves as a lubricant to prevent the respiratory system from drying out?

Mucus Signup and view all the answers

What is the primary function of sweat in the human body?

To regulate body temperature Signup and view all the answers

What is the average volume of blood in a human body?

5-6 liters Signup and view all the answers

Which of the following functions is NOT a role of blood in the human body?

Energy production Signup and view all the answers

Which of the following body fluids is essential for the complete digestion of fats and, to some extent, of proteins and carbohydrates?

Bile Signup and view all the answers

What is the primary function of the renal cortex in the kidneys?

To connect to the nephrons and facilitate blood vessel formation Signup and view all the answers

What is the approximate pH of urine in a healthy adult?

6.0 Signup and view all the answers

Which type of blood cell has a lifespan of approximately 10 days?

Platelets Signup and view all the answers

What is the primary mechanism of carbon dioxide transport in the blood?

Dissolved in the plasma as a gas Signup and view all the answers

What is the primary function of granulocytes in the blood?

To engulf and digest foreign particles Signup and view all the answers

What is the percentage of water in urine?

95% Signup and view all the answers