Human Physiology - Body Fluids & Circulation

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Q1. Which of the following is the main component of plasma? (2022)

Solution:

Plasma is composed of approximately 90% water, with proteins, electrolytes, and nutrients making up the remaining 10%.

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Q2. Which of the following is NOT a function of blood? (2023)

Solution:

While blood plays many roles, it does not produce hormones; hormones are produced by glands in the endocrine system.

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Q3. What is the role of the lymphatic system in the human body? (2023)

Solution:

The lymphatic system is responsible for transporting lymph, which contains immune cells, and helps in the removal of waste products from tissues.

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Q4. What is the average volume of blood in an adult human body? (2020)

Solution:

The average volume of blood in an adult human body is approximately 5 to 6 liters.

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Q5. Which organ is primarily responsible for the production of blood cells? (2021)

Solution:

Bone marrow is the primary site of blood cell production, including red blood cells, white blood cells, and platelets.

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Q6. Which component of blood is primarily responsible for the immune response? (2020)

Solution:

White blood cells, or leukocytes, are the key players in the immune response, helping to defend the body against infections.

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Q7. Which of the following is a function of the lymphatic system? (2023)

Solution:

The lymphatic system helps to remove excess fluid from tissues, returning it to the bloodstream and playing a role in immune function.

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Q8. Which type of blood vessel carries oxygenated blood away from the heart? (2022)

Solution:

Arteries are the blood vessels that carry oxygenated blood away from the heart to the tissues, except for the pulmonary arteries.

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Q9. Which hormone regulates blood pressure by causing vasoconstriction? (2019)

Solution:

Angiotensin II is a potent vasoconstrictor that plays a key role in regulating blood pressure.

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Q10. Which organ is primarily responsible for filtering blood? (2021)

Solution:

The kidneys filter blood to remove waste products and excess substances, maintaining homeostasis in the body.